+1! Serious point.
What Paul has said is very important. You can find the most horrid things - ripped photos, improper framing materials, bad tape, paper loss...I have even seen duck tape and glue. There is sometimes a reason the thing is framed. Because it has the potential to reveal something awful/fatal, it must be a deal breaker to me. Nothing framed w/o return privilege (and you save on shipping weight - and why sell something framed? What are the chances you will like MY mat choice or molding choice?).