I just picked up my first Mondo print, a Whalen Duck Dodgers, at the Mondo gallery opening Saturday, and now I'm looking to frame it up. I don't really want to spend a huge amount of money or time on the framing though, I just want the print to look nice on the wall and be reasonably well-preserved.
I went by Hobby Lobby the other day, and they're having a 50% off framing sale, including custom framing (but the discount doesn't apply to the mats and glass...

), pre-made frames, and other framing supplies. They had several fairly nice-looking pre-made 18x24 frames (with glass, backing already in place) that I could get for $20 on sale. Is there anything wrong with using these kind of pre-made frames? Are there any extra precautions I should take when using these type of frames so that the print doesn't stick to the glass, or something like that? I'm new to this, and would appreciate any advice.
Also, as far as aesthetic concerns, I was originally thinking of a plain black frame for the Duck Dodgers, but they had a white frame there that I'm thinking could look pretty cool. What do you all think?