Yeh fair enough, didn't want to sound too critical of the poll, just seems obvious the views of whoever made it.
In terms of buy it now, it can help cheaters because it open up controlled transfers between two individuals. With the bidding process every single transfer is publicly listed and therefore anyone can bid if it is a reasonable price.
With buy it now two people could agree a sale before the player being listed, and closing off the option to everyone else.
Just takes away the open aspect of transfers.