Facebook Marketplace Seller Tools
Facebook Marketplace Offer ROI Calculator
Estimate whether accepting a Facebook Marketplace buyer offer, sending a counteroffer, or waiting for a higher price leaves enough profit after item cost, delivery, shipping, packaging, refund allowance, time cost, and platform fees.
Offer inputs
Enter list price, buyer offer, counteroffer, item cost, delivery cost, shipping cost, time cost, and minimum acceptable profit.
Results
Estimated Facebook Marketplace offer profitability.
Profit at buyer offer
$25.50
Estimated profit if the buyer offer is accepted.
Profit at counteroffer
$32.50
Estimated profit if the buyer accepts your counteroffer.
Profit at list price
$40.50
Estimated profit if the item sells at full list price.
Profit lost from offer
$15.00
Difference between full-price profit and buyer-offer profit.
Offer discount
$15.00
Dollar discount from list price to buyer offer.
Offer discount percent
18.8%
Buyer offer discount as a share of list price.
Counter discount
$8.00
Dollar discount from list price to counteroffer.
Profit recovered by counter
$7.00
Extra profit recovered by countering instead of accepting the first offer.
Minimum acceptable price
$59.50
Estimated price needed to reach your minimum acceptable profit.
Break-even price
$39.50
Approximate sale price needed to avoid losing money.
Offer margin
39.2%
Profit at buyer offer divided by buyer offer.
Offer ROI
170.0%
Offer profit compared with profit lost from discounting.
What this means
The buyer offer of $65.00 creates an estimated profit of $25.50. Your minimum acceptable price for the target profit is about $59.50.
Acceptable: The buyer offer appears acceptable under the entered assumptions.
Offer discount scenario comparison
| Discount | Offer price | Profit | Margin | Status |
|---|---|---|---|---|
| 0.0% | $80.00 | $40.50 | 50.6% | Acceptable |
| 5.0% | $76.00 | $36.50 | 48.0% | Acceptable |
| 10.0% | $72.00 | $32.50 | 45.1% | Acceptable |
| 15.0% | $68.00 | $28.50 | 41.9% | Acceptable |
| 20.0% | $64.00 | $24.50 | 38.3% | Acceptable |
| 25.0% | $60.00 | $20.50 | 34.2% | Acceptable |
| 30.0% | $56.00 | $16.50 | 29.5% | Counter |
How to use this Facebook Marketplace Offer ROI Calculator
Enter prices
Add list price, buyer offer, and possible counteroffer.
Add costs
Include item cost, packaging, delivery, shipping, time, and refund allowance.
Set profit floor
Enter the minimum profit required to make the sale worthwhile.
Review decision
Use the results to accept, counter, reject, or wait for a stronger buyer.
Facebook Marketplace offer breakdown
Review the numbers behind the buyer offer estimate.
List price
Included in the offer ROI estimate.
$80.00
Buyer offer
Included in the offer ROI estimate.
$65.00
Counteroffer
Included in the offer ROI estimate.
$72.00
Base costs
Included in the offer ROI estimate.
$39.50
Profit at list price
Included in the offer ROI estimate.
$40.50
Profit at buyer offer
Included in the offer ROI estimate.
$25.50
Profit at counteroffer
Included in the offer ROI estimate.
$32.50
Common Facebook Marketplace offer mistakes
Accepting buyer offers before checking item cost, delivery, and time.
Using list price as the profit reference instead of break-even price.
Leaving no negotiation room on items where buyers expect offers.
Countering randomly instead of using a minimum acceptable profit.
Accepting low offers just to move inventory while erasing margin.
Ignoring no-shows, pickup delays, refund risk, and buyer friction.
Ways to improve Facebook Marketplace offer strategy
Know your floor
Calculate the lowest acceptable price before buyer messages arrive.
Build offer room
List with enough margin to accept reasonable local buyer offers.
Counter with data
Use break-even and target profit to guide whether to accept, counter, or reject.
Reject weak offers
Avoid accepting offers that move inventory but damage profit.