Poochie, we've never not had both spare ribs and babybacks at our Denver Costco's. I was getting the spare ribs for a while when the price on the babybacks got up so high ($4.69!!!) but now they are down to $3.79 or so and the spare ribs are the same (first time I have seen them priced the same.) I quite liked the spare ribs as well- quite a bit more meat on the bone.
BTW, the babaybacks came out nearly perfect, and the country-style ribs were FABULOUS- with so much surface area for the rub and smoke, they were like a cross between the best smoked pork chop ever and burnt ends. I took some of the smaller crispier pieces and dipped them into a new batch of my barbecue sauce (see separate post) and it was eys-roll-back-in-you-head-and-see-God level good. I wish I had taken pics to post. I cooked both the babybacks and the country-style ribs at 225-235* for four hours, used apple wood for the smoke.