Review (5/5): Worth every penny.
I didn't order from this seller, but Ortlieb's product descriptions are vague, even on their site, so I'll try to clear up some confusion here. I am buying this to replace my ten-year old Ortlieb panniers that were stolen. The company has significantly innovated their product since then, for the better in every way I can see.
''This bag is awesome. It's big and roomy, yet collapses and folds down if desired. The QL2 system refers to the ease with which it is ingeniously and effortlessly mounted and removed from the bike. It is customizable to the point of surely fitting any bike rack you have.''It has some nice inner pockets and some very well crafted handles. I am considering exchanging it for the Back Roller just because my laptop bag fits in it slightly better, but overall the Shopper makes more sense for this city commuter, so I am undecided.
''I got the black which has a leather look to it and a nice shiny silver Ortlieb logo on it. They're pretty slick.''
Ortlieb makes a lot of little accessories for their panniers not available elsewhere. I recommend you check out their site for things like steel wire loops that act as theft deterrents (emphasis on the word deterrent).
''How does this bag differ from other Ortlieb bags? it's almost identical to the Ortlieb "back roller classic". In fact they are the same size, liter-by-liter. The main differences are the Shopper has a high quality ziplock seal at the top of each bag, and it is more of a wide mouth shape, while the back rollers have the odd fold-over style closure. The wide-mouth shape will be nice for shopping, but I find that with my laptop bag inside the Shopper, I can only seal the zip after great effort. I'll probably just leave it unzipped unless in bad weather. ''I may post pictures and updates in a while. I hope this review helps you make your choice!