I also look at the feedback of the seller, especially any negative or neutral feedback. I'm especially careful with new sellers.
Gotta be careful there too. The guy that screwed me had a lot of feedback, 99.9% positive. Then I caught gunbroker erasing both mine and another guys negative feedback we left for the guy on the same weekend.
Both negatives were only up for a day or so then were deleted, along with my account.
This was before the seller had been forced to refund me.
I have no kind words for Gunbroker.
The ONLY reason the seller eventually refunded what he did was because I started making noise with a few LE agencies.
He was bragging about being able to keep the full amount through a few emails.
No, my debit card was no protection.
Lessons learned.
I'm glad others have had positive experiences. Buyer beware, if you have an issue with a seller, gunbroker will do nothing for you, they like their sellers' auction fees too much.
Gunauction.com was the polar opposite, In about 50 purchases I made, I had an issue or two there and the staff was very proactive in helping me resolve them.
They aren't afraid to lock a sellers account until the seller resolves the issue.
Responses from staff was measured in hours, not weeks if at all like gunbroker.
http://www.sitejabber.com/reviews/www.gunbroker.com
2 star overall rating, 22% satisfaction, most reviews a 1 star, lots of complaint very similar to mine.