For a limited time, participating Wendy’s locations have Jr. Frosty Halloween Boo! Coupon books for only $1.00! It looks like most books will have 5 coupons included in the book. So, that’s 5 Jr. Frosty’s for only $1.00. Awesome. This would be a fun idea to hand out these coupons instead of candy to your trick or treaters. Or treat your kids to a frosty when they accomplish something or earn it!