Well, it varies by league setup. If you are playing in a 10 team x 15 man roster league then there's going to be all sorts of value available on the WW each week (and studs & duds would be the correct choice). That's why team number and roster limit come into play when determining a strategy. However, if you are playing in 12-14 team leagues with 20+ man rosters then being able to churn 3-4 players a week isn't going to help you very much. I pretty much refuse to play in leagues that roster less than 240 players, so I don't usually see a lot of talent sitting on the waiver and drafted depth is much more important than the ability to churn all willy nilly. Shallow rosters are a parity mechanism, so you're basically playing socialist fantasy football if you play in shallow roster leagues. Ron Swanson would not approve.
But what you mention can happen in any league. It's important to keep an eye on perceived tiers. The last player in a tier will often go for more than the last couple guys in that tier if there are a few big stacks left out there.
Going for value is only dangerous if you go in blind. You should always have
several pre-draft game plans mapped out. There are a lot of ways to get AAV, but the best way is to use your own league:
- Go back and look at old auctions from the league
- Sort high to low prices by position
- Delete the column of last year's players, keeping the auction values
- Find a good snake draft ADP, sort by position, and paste those players next to last year's auction values
Once you've done that, game plan away. If you want Barkely, plan a team around him and see how your budget pans out. But also plan another team around missing out on him. And if it is a "must have" player, plan on paying at least 5% extra for him.