I rarely use C-Bid anymore just because I can usually find a good price with all the coupons available without such a hassle. I also find myself trying to support my local B&M more often, that is mostly for singles though.
The last time I used C-Bid was to pick up some C.A.O Flavours (I know, I know) for a friend. I SWEAR they were for a friend that doesn't smoke often and wanted to look cool on vacation.