is the auction site accurate?

[Gel Mibson]

been trying to buy some things based off the auction site and got responses from several sellers I was trying to negotiate with that the p99auction site is not an accurate representation of what the market rate is for some items.

several people have been telling me that there are people who sway the average price by fake WTS linking items to drive the price down. wasn't sure if he was BSing me or if he was legit.