$1.17 for over $29 worth of groceries at Walgreens

Maybe you are wondering how in the world did I do that?
My dad calls it my part time job and well...that's what it is.  It doesn't come without work, time or pre-planning.  But I just loooove it!  It is like a game to me.

So I'll start from this trip and try to answer any questions along the way.  Stay tuned.
Here is what I bought with the original prices:

1 8x10 photo collage         3.99
2 gallons white milk            2.70 each
1 half gallon choc milk       3.49
4 cream of soups               1.59 each
2 quaker containers oatmeal 3.49 each
3 dozen eggs                       .99 each

Total $29.19

I had a free photo collage for being a walgreens fan.
2/.50 coupons for the white milk
free half gallon choc milk when you buy 2 gallons white milk
I used the in-ad Q (coupon) for the oats which took a total of $3.98 off plus I combined that with 2 $1 manufacturer coupons making each 18 oz container only .50.
I used another in-ad Q for the soups which took a total of $2.80 off for them and combined that with a .25 manufacturer Q.

My total here now was $12.68
I would have been pretty happy with that amount but...
Here is where it gets a little trickier.

Last week they were running this promotion where if you bought a Bayer Contour Blood Glucose Meter $14.99 you get $5 RR (register rewards). Normally these cost $79 but they were on sale for $14.99. So the coupons were adjusted down to $14.99. I had 2 $30 off coupons for these.  So I bought 2 in 2 separate transactions and I got a total of $10 in free money. So what am I going to do with them? Donate them to someone who needs them.

So I used my $10 in register rewards and then my total was down to 2.68.  I also had another $1 RR so my total was $1.68.  And now for some reason my math isn't adding up correctly.  But according to my receipt I only paid $1.17.  Anywho I hope this is making some sense.