Yes, the coupons work with the 15% off.
The cashier warned me the coupons wouldn't work on Transformers, period!
Since I used the in-store booklet which is different and logo-limited to 'Hasbro Gaming'.
Either way, for 15% or Hasbro toys, he simply said "Let's scan it and see if it works"
It did.
So POTP 1Voy + 2 deluxe = 70$ regular.
With discount and 20 off 50 coupon, = 39