Exactly... just take eBay as an example. No amount of no-fee auctions has been able to dethrone them. If you think about it, you will notice that as soon as you're mediating the exchange and money changes hands, people don't mind giving you cut at all. They don't even consider the fee when listing/purchasing (well, eBay charges listers so purchasers don't mind). As long as you can attract enough purchasers (i.e. eyeballs), sellers will come. That's why eBay is not squeamish about jacking up the fees...
Exactly... just take eBay as an example. No amount of no-fee auctions has been able to dethrone them. If you think about it, you will notice that as soon as you're mediating the exchange and money changes hands, people don't mind giving you cut at all. They don't even consider the fee when listing/purchasing (well, eBay charges listers so purchasers don't mind). As long as you can attract enough purchasers (i.e. eyeballs), sellers will come. That's why eBay is not squeamish about jacking up the fees...