How it reads your rules. Each player has a market value (Full-PPR, 0–10,000 scale). Their keeper value adds the surplus of their contract: market value minus what it costs to keep them, summed over every season you still control them. Cost rises one round earlier each year until it would beat a 1st — a 2nd-round keeper costs a 1st, a 1st-round keeper costs a 1st + 3rd, and that's where the ladder ends. So a stud you keep in the 10th carries years of cheap surplus; a 1st-rounder carries almost none. The stamp compares keeper-adjusted totals against your 1,000-point band: inside it, the trade auto-approves; outside, it goes to a league vote. Player values are a consensus of DraftSharks 3D dynasty (your CSV) and FantasyCalc dynasty (1QB, 12-team, pulled live), averaged and scaled to 10,000 — KTC tracks within a few points. Draft picks ride the same curve: unlike a rookie-only dynasty pick, a snake keeper pick drafts the best player still on the board once leaguewide keepers are gone, so a pick is worth the player you'd take with it — and the keeper cost you pay is that exact pick value. Adjust "keepers off board" to match how many studs your league locks up. Click any value to override toward your own board.