Disagree. Certainly at the lower levels selling freebies works a treat, as long as you have tokens and are prepared to use them. 7-10 tokens is the maximum you'll have to bid in most auctions, unless you have a very competitive TM
Assuming the auction goes as high as 10 tokens (mostly less), then the player has to be worth the trouble. E.g. At level two I go for players worth at least £750k, because I can get four for 25 tokens max and sell for £3m. That would cost me 45 tokens if I bought from the bank