Here's the numbers:
OOP (from GC) = 9.24 (mostly tax)
RR gained = 8.50
total damage = .74

I got:
9 Kotex (used $1 Qs)
9 Dimetapp (used $2 Qs)
3 Robitussin (used $2 Qs)
3 OralB toothbrushes (I didn't have Q's, but you might)
4 Powerade (I was out of these Q's, too)
2 Headbands, clearance, .74 each
1 Package of cheese and crackers, $1


My transactions:

3 Dimetapp (or Robo) = 11.97
2 Powerade .79 with 7-day = 1.58 (I substituted clearance headbands here once)
-$6 ($2 Dim x 3)
-$4.50 RR
-$3.00 RR
= .05 + tax, get $10RR

Then:
3 Kotex $9
1 Oral-B 4.49
-$3 ($1 Kotex x 3)
-$10RR
=.49 + tax, get $7.50RRs ($3 and $4.50)

Gotta love it