Most resellers spend hours pulling comps by hand, then overbid anyway. BidMargin runs a comp audit on K-BID lots in real time and gives you a buy ceiling, a margin band, and a confidence score before the clock hits zero.
A real-time lot card with comp-based margin data. Every number derives from comparable sold listings. No guessing, no spreadsheets.
Active alerts
Construction equipment · 12 lots tracked
2019 Cat 420F2 Backhoe
K-BID Lot #KS-88241 · Closes in 4h 12m
Buy ceiling
$36,500
Est. resale
$41–45k
2018 Cat 420F2 Backhoe
Midwest
Mar 2025
$38,400
2019 Cat 420F2 Backhoe
Southeast
Feb 2025
$41,200
2020 Cat 420F2 Backhoe
Southwest
Jan 2025
$44,800
AI-generated comp-based estimate. BidMargin does not guarantee resale value or investment return.
How it works
Every active lot in your target categories hits our pipeline the moment it goes live. Nothing falls through before you see it.
AI cross-references regional sales, condition flags, and days-to-sell patterns against comparable lots that already closed. That's the comp audit.
A comp-based estimate lands in your alert: resale range, buy ceiling, and confidence score. Bid with a number, not a guess.
Comp Audit Report
Lot #KS-48821 — DeWalt 20V Combo Kit (6-pc)
Auction closes in 14 min
Resale margin band
Buy ceiling
$164
After fees and shipping est.
Confidence
87%
12 comps matched
Matched comps (recent sold)
Comps pulled from real closed lots, not asking prices.
Why BidMargin
Three places where working without comps quietly drains your returns.
Research time
Hours of manual comp research per lot
Seconds
Pulling comparable sold listings by hand means tab after tab, auction site after auction site. BidMargin runs that audit the moment a lot appears on K-BID and surfaces the result before the bidding heats up.
Bid risk
Overbidding without data
Comp-backed buy ceiling
Every lot without a buy ceiling is a guess. BidMargin gives you a hard number derived from what comparable equipment actually sold for, regionally weighted so the ceiling reflects your real resale market.
Tool access
Enterprise valuation software priced for dealer networks
Self-serve from $49
Commercial valuation software is built for dealer networks paying enterprise rates. BidMargin brings comp-based margin estimates to independent resellers and small flippers at a price that makes sense on a single lot.
All margin estimates are comp-based. BidMargin does not guarantee resale outcomes.
Pricing
Start with a single report or run alerts across every category you flip. No lock-in at any tier.
One-Time Lot Report
Margin Alerts
Full Valuation
All estimates are comp-based. Not a guaranteed valuation.
See full plan detailsCommon questions
All estimates are comp-based. Not a guaranteed valuation.
Ready to source smarter
Comp-based estimates delivered within minutes of new K-BID listings going live.
