That should be driving the cost of the top-end players up, not down. For one thing, you've got more money to spend on fewer roster slots; for another, you don't have to worry about running yourself dry and having to fill 2/3 of your roster via the $1 scrap heap - you're effectively guaranteed an 11th- through 16th-round pick no matter what.
In my experience, the top 5 guys in most standard (16- or 17-man roster) auctions usually go for around 32-35% of the cap, and about a dozen guys ("the first-rounders") will cost at least 25%. IMO, the ABs of the world should be going for no less than $40 in your format, and under no circumstances should you be getting 1st-round talent for less than $30. If they're averaging more like $33 and $22 respectively, I'd nab the four best players I could for $94 total and six dollar menu specials, and laugh all the way to the title game.