[x2drich2000]

I always say it comes down to 3 things: time, money, and effort. Pick which two mean the most to you.

Sell yourself - greatest control of time and how much money you get, you get funds immediately, but takes the most effort scanning, packaging, going to postofffice, answering questions,, etc

Consign to an auction house - little effort, the ah takes care of most of the tasks, no control of sale price and there can be fees. Takes the longest from when you give the AH your stuff to when you receive payment

Sell to dealer - little effort, likely smallest cash, but you get all the money quickest

For fees with an auction house, everything is negotiable. The better your stuff, the better the deal. Many today will give 0% sellers fees. As long as you stick with a reputable company that has been around for a while, i believe there is little risk. Just make sure you get everything in writing on your contract.