Step 1: Go to Amazon.com 42 count box page and scroll down just a bit to where you see a $3 coupon you can "Clip". Clip it.
Step 2: Sign up for the Prilosec OTC Subscription for 2 Boxes (every whenever, you can cancel it right away). Must be 2!
Step 3: Your order total should come to $31.59 (at least mine did)... Then you go get your $25 Rebate Form
Once your products arrive, fill out the form, throw in your 2 UPC labels, put your Amazon.com invoice/receipt in with it and send it off. With the $25 back you pay $6.59.
One note: I have completed and sent off my form on the day that this deal came out (Dec. 26th). My attempt to contact P&G to verify this deal will work this way hasn't been returned (so if anyone can verify this 100% that would be great) or may be blocked by my filter.
Regardless, if you take this medicine, $31.59 for 2 boxes is still a pretty good deal (about $45 from wal-mart).