This was not the best week of shopping because I made mandatory purchases too (note socks and laptop pad) however, I did still end up with 76.2% savings after my shopping trips (it took 2 days due to migraines and potty training). I also bought paper products for a big party this weekend and though they were on sale it is not a normal purchase for me. I shopped Walmart, Kmart and Walgreens.
Total Spent: $75.36
Total Saved: $241.51
Remaining Credits: $10
I should also note that when I total my amounts I include tax (so I never have 100% savings).
I also count credits (RR & GC) on the week I use them only so as to avoid counting them twice.