Will have to check into VBD app next year if we're still doing auction. I would think that it you're punching in all of the settings, shouldn't the total valuation for all players match the budget, multiplied by the total teams in the league?
It's not surprising that the one team in your league that likes that player the most is going to overpay on his suggested value. The key is being right on your "overpays", or finding the guys that were actually undervalued. If it's systemic where all studs are priced under what everyone is willing to pay and all low level guys are priced too high, then yeah, probably on the app. And yes, I have made this observation on a lot of the default auction cheat sheets. The curve is way more flat than it probably should be. Nobody is wasting $4 of their budget for guys that will be almost entirely interchangeable with undrafted players.
The problem is the spreadsheet makes it a linear trickle in value then in reality, top players have a bigger premium and run in the mill bottom half players are usually much cheaper. This is true with every auction draft I've ever done because loading your team with WR2s and RB2s value in the back end only is a losing strategy. It isn't about overpaying, it's that you're not getting a top 10 ranked player for under $40. Maybe not even under $50. Or I've been living in a bubble and everyone else's auctions have top talent go on the cheap.
No doubt about it, if you stay disciplined according the spreadsheet, let your entire league overpay for studs, gain the advantage by loading up on a deep team of RB2s & WR2s, and the teams that paid for studs are in a better place to compete even after filling out their roster with freebies, then the valuations were wrong.
I think it's worth noting, this disciplined / frugal / sucker team might not have great week 1 projections compared to the other top-heavy teams, but are we sure they wouldn't be setup to have more success as injuries take place and trades are completed?
The reality is that if the input settings don't ask you for such detail as how many teams make the playoffs or how many IR slots do you have, then they're going to be flawed.