Pics or it didn't happen (post a screenshot of your trade history).

Their fees are plainly listed on the site as 0.4% (taker) and -0.1% (maker). There is a small fee of 1-4% to deposit cash into the account, which would be no more than $200 to deposit $5000 in cash.

Also the buy price is determined by the buyers and sellers on Bitfloor. So the sell price is equally as high. And the price is not always higher than other exchanges--it's usually only about 1 to 2% higher than MtGox but sometimes is actually lower (BTCE-E is usually the lowest that I've seen, but its user interface is not very nice).