I am doing some prints for Christmas presents, and I want to put them in some inexpensive frames. The only problem is, I don't know what sizes you can get at your average big-box retailer for cheap (I'm not really looking to go custom framing on these). One of them will be a 4:5 ratio. I was going to do 8x10, but would a store like this carry bigger frames in that same aspect ratio? The other is 35mm and can't be cropped too heavily, so it's going to need to be 2:3. Are 12x18 frames easy to come by? 8x12? Unfortunately, I am going to need to get the frames after I order the prints, so I need to make this decision rather uninformed. Anyone have an idea?