Walgreens Trip

I had $2 in RR expiring today so I wanted to see how far I could make that $2 go....
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Transaction #1:
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Papermate Pencils $.39
2 Nabisco Mini Oreos $.50 each
3 Pkgs Dentyne Gum 3/$1.98
Used $.99 Walgreens coupon
2 White Posterboards $.34 & $.33 each
Used a $1 Dentyne coupon
Used a $2 RR
Final Cost $.05
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Transaction #2
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3 Pkgs Dentyne Gum 3/$1.98
Used $.99 Walgreens Coupon
Used $1 Dentyne coupon
That would have left me -$.01
I had to buy the Resses cups $.49
Final Cost $.48
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Total Savings with both transactions $14.85