Finding products to resell is less about spotting a low price and more about proving that the complete transaction can produce an acceptable return. This workflow shows how to compare online arbitrage, retail arbitrage, wholesale, liquidation, and local sourcing; estimate fees and operating costs; check demand and restrictions; and record each decision so your sourcing process improves over time.
Overview
There are several practical answers to the question, “Where can I find products to resell?” You can look for online arbitrage deals through retailer websites, use retail arbitrage leads from physical stores, buy case quantities from wholesale suppliers, evaluate liquidation inventory, or source products locally from businesses, trade events, and direct contacts. Each route has a different balance of price, predictability, product condition, documentation, and time.
Online arbitrage is convenient and easier to repeat, but competition, changing prices, shipping charges, and stock availability can affect the result. Retail arbitrage may reveal discounted products in person, although travel time and limited quantities make the process harder to forecast. Wholesale can provide repeatable replenishment, while liquidation may offer lower acquisition costs with greater uncertainty about condition, completeness, and sellable units. Local sourcing can produce distinctive opportunities, but usually requires more manual evaluation.
A good sourcing decision therefore has two parts: first, determine whether the product is eligible and likely to sell; second, calculate whether the expected net profit justifies the cash, time, and risk involved. A product is not automatically a good deal because its purchase price is low.
For a broader demand and product-selection framework, see Best Products to Resell Online. If you are comparing vendors rather than individual deals, the guide to wholesale suppliers for resellers provides a useful next step.
How to estimate
Use the same calculation for every candidate product. Consistency makes online arbitrage deals, retail finds, and supplier offers easier to compare.
- Record the expected sale price. Use a realistic current selling price or a conservative range rather than the highest visible listing. Consider the condition, bundle contents, model, variation, and marketplace where you intend to sell.
- Add acquisition and inbound costs. Include the unit purchase price, sales tax where applicable, supplier shipping, freight, prep materials, inbound shipping, and any sourcing-related cost allocated to the unit.
- Estimate marketplace and payment costs. Enter the applicable referral, transaction, payment-processing, fulfillment, storage, advertising, and return-related costs for the channel. Rates and programs vary, so verify them in the relevant marketplace account before purchasing.
- Account for expected loss. Set aside an allowance for damaged units, missing parts, returns, discounts, price changes, and inventory that cannot be sold as planned. The allowance can be a percentage of cost or a per-unit amount, provided you apply it consistently.
- Calculate the result. Use these formulas:
Total landed cost = purchase cost + tax + inbound shipping + prep or packaging + allocated sourcing cost.
Estimated net profit = expected sale price − total landed cost − marketplace costs − fulfillment costs − expected loss allowance.
Net margin = estimated net profit ÷ expected sale price × 100.
Return on cost = estimated net profit ÷ total landed cost × 100.
Profit alone is not enough. A product that earns a modest amount quickly may be preferable to one with a higher theoretical profit that remains unsold for a long period. Add a simple demand check: review comparable sold or completed listings where available, the number and quality of competing offers, recent price movement, and whether the product appears seasonal. Do not treat a single listing or a temporary price as proof of demand.
Inputs and assumptions
Your estimate is only as reliable as its inputs. Create a sourcing log with one row for each product and record the date and source of every important number. A basic log should include:
- Product name, identifier, variation, condition, and quantity available.
- Source, seller, supplier, or store location and the date checked.
- Purchase price, taxes, shipping, prep, and minimum order quantity.
- Expected sale price and the marketplace or sales channel.
- Estimated selling, payment, fulfillment, storage, and advertising costs.
- Demand indicators, competing offers, restrictions, and documentation status.
- Expected profit, margin, return on cost, and a confidence note.
Before calculating profit, confirm that you are permitted to sell the item in the intended channel. Check category, brand, condition, and geographic restrictions, as well as packaging, labeling, safety, and authenticity requirements that may apply to the product. Keep invoices, receipts, supplier communications, and product photographs where appropriate. A profitable-looking item that creates an eligibility or authenticity problem is not a sound sourcing opportunity. The guide to avoiding IP complaints and inauthentic claims covers this risk in more detail.
Use conservative assumptions when information is incomplete. If the sale price is uncertain, calculate a low, expected, and high case. If a liquidation lot has unknown condition, value only the units you can reasonably inspect or resell, and treat the remainder as uncertain rather than guaranteed inventory. For supplier purchases, include the minimum order quantity and the amount of cash tied up while products are waiting to sell.
Worked examples
The following examples use hypothetical figures to demonstrate the method, not to describe current market prices or guaranteed outcomes.
Example 1: Online arbitrage
Assume a unit is listed for an expected sale price of $42. A hypothetical calculation uses a $20 purchase cost, $3 inbound shipping, $1.50 in packaging, $8 in marketplace and payment costs, and a $2 allowance for returns or price movement. The estimated net profit is:
$42 − ($20 + $3 + $1.50 + $8 + $2) = $7.50.
The estimated net margin is $7.50 ÷ $42, or approximately 17.9%. If the price falls to $36 while other costs remain unchanged, profit becomes $1.50. That sensitivity check shows why a deal should not be judged only by its current spread.
Example 2: Retail arbitrage
Suppose a store purchase costs $12 per unit and the expected sale price is $29. You estimate $6 in marketplace and fulfillment costs, $1 for packaging, and $2 for travel and sourcing costs allocated to each unit. The estimated profit is:
$29 − ($12 + $6 + $1 + $2) = $8.
If the store is a long drive away or only one unit is available, the result may not justify the trip. Divide total travel cost by the number of units you realistically expect to source, not by an optimistic target. Record the actual result so future retail arbitrage leads become more accurate.
Example 3: Wholesale or liquidation
Assume a lot costs $600 and includes 50 units, making the stated unit cost $12. If inspection suggests that only 40 units are likely to be saleable, the practical acquisition cost is $15 per expected saleable unit before freight, prep, and selling costs. This adjustment can change the decision materially. For liquidation, calculate both a conservative case based on confirmed sellable units and an upside case based on units that may become sellable after testing or repair.
Use a reseller inventory and profit tracker to compare estimates with actual sale prices, fees, days to sell, returns, and realized profit. The gap between estimated and realized results is one of the most useful inputs for improving future sourcing.
When to recalculate
Recalculate before each purchase when a key input changes. This includes a different sale price, supplier discount, shipping quote, marketplace fee, fulfillment method, tax treatment, minimum order quantity, or product condition. Recheck demand when a competitor changes price, a listing gains or loses offers, the product becomes seasonal, or your inventory remains unsold longer than expected.
Review completed sourcing logs on a regular schedule—after each batch for new sellers, then at a consistent weekly or monthly interval as volume grows. Compare projected and actual margin, return on cost, sell-through, return rate, and time spent sourcing or preparing units. Update your assumptions rather than quietly carrying old numbers forward.
For your next sourcing session, choose one channel, define a maximum landed cost, and set a minimum acceptable return before browsing. Check eligibility first, run the low-case calculation, and record the result even when you reject the deal. That disciplined process turns scattered reseller deals into a repeatable sourcing system. When purchasing from a supplier, also use the supplier verification checklist before placing an order.
