I spotted Mentos NOWmints at my Walgreens store, on clearance for $1.29. Use a buy one get one free printable coupon at checkout. Later, submit for a $0.50/1 Checkout 51 offer twice. (The offer has a limit of four.) The final price will be $0.15 each!

Note: Clearance prices and products vary by store

Use one B1G1 Free Mentos NowMints (smartsource.com)

And submit two $0.50/1 – Mentos NOWmints via rebate app (checkout51.com) — limit 4

Pay $1.29, Submit for $1.00 in Checkout 51 Credits

Final Price: $0.15 each, when you buy 2