I have had pretty good luck with Costco's print quality. I printed some the other day and I had to redo them because it was almost as if they enlarged slightly. Some of my text that was near the edges bled off the side and I know they had printed fine previously.

One of the things I always do is fill in the whole 12x18 space....I make a 12x12 and then put two 6x6 pages at the bottom so I get 3 scrapbook pages for $3. If you don't do 6x6, you could also put 3-4x6 at the bottom of your 12x18.

I was so glad to discover Costco. The pro lab that I normally use charges $20 for a 12x18 and they print on the identical paper! I haven't been at all happy with Costco for prints from negatives but for digital prints I've found they match the color and density pretty well.

Have a great day! Kristin