My Stater Bros. and Albertsons Shopping Trips

Today at Stater Bros., I spent $5.88 and saved $2.79, which is 33%. Here's what I bought:
1 Pasta Roni $.88
2 Sundae cups $2.50 each = $5.00

At Albertsons, I spent $10.20 and saved $17.60, which is 63%. Here's what I bought:
1 Cantaloupe $.69/pound
2 Kraft BBQ sauce $.79 each = $1.58
1 Wishbone Salad Dressing $.99 - $.50 coupon = $.49
7 Ragu pasta sauce $.99 each = $6.93 - 3 $1.00 coupons = $3.93

Looking back on this, I realize my total doesn't come up to $10.20. So, I looked at my receipt. What happened is the cashier missed one of my Ragu pasta sauce, which meant I only purchased 9 items, not the 10 items needed for the $5.00 off. So, I didn't get the good deal I should have. I hate when that happens. I'm so careful to check everything as it rings up, but the deal doesn't show up until the end of the transaction. I checked my receipt, but failed to check for the $5.00 at the bottom. Ugh! Oh well!