I printed a couple of 8x10s at Costco last night. They were $1.49 each, half what it would have cost to do it through Apple's store, and I got 'em in 2 hours. I'm quite impressed. They have ICC profiles available for download, so you can install those and then proof the images against that profile (provided you have a calibrated monitor, which I don't...) to get the best output. I don't love Costco as a whole, but my membership has paid for itself just through the liquid glucosamine I buy for my dogs, so cheap, quick prints are an added bonus.
