Off-the-shelf auction values assume a league you are not in. Iron Tuna rebuilds every value from your real settings, so the numbers actually match the auction you are about to play.

Your league is not the default league

Most published auction values quietly assume a 12-team, $200, standard or half-PPR league. If your league is 10 or 14 teams, uses a $300 budget, starts three receivers and two flexes, awards a point per first down, or gives premium scoring to tight ends, those default values are wrong before the draft even starts. Small rule changes move prices a lot, and the players who shift the most are exactly the ones your leaguemates will misprice.

Every setting changes the math

Iron Tuna recalculates from your inputs rather than tweaking a generic list:

• Team count and total budget, which set the dollars chasing each tier
• Roster slots and flex rules, which decide how scarce each position really is
• Full custom scoring, including PPR variants, first downs, return yards, and six-point passing TDs
• Premium positions, like TE-premium, that quietly re-rank an entire tier

Change any of these and watch the values move. That responsiveness is the point: the closer the numbers match your league, the bigger the gap between what you know and what the rest of the room is guessing.

Three numbers, your settings

Every player gets a market price, a true value under your rules, and your personal max bid. Because the values are tuned to your format, the recommendations are too: a tight end who is a luxury in a standard league becomes a must-own in TE-premium, and Iron Tuna's values say so without you having to do the mental math at the table.

Weird home leagues welcome

Long-running home leagues accumulate strange rules, and those rules are where edges live, because no national tool prices them. Set your exact configuration once, paste or screenshot your scoring, and every value recalibrates with no account required. For superflex and two-quarterback leagues specifically, see Superflex auction values, or read how the numbers turn into live decisions with the auction draft assistant.