PM the $5 off? It's $9.99 on the website. Are you talking about the $2.50 manufacturer's coupon? Honestly...even if they won't take that too, I'd just be happy to finally get the damn movie for $5 + tax (especially considering it's a combo pack). I've never been able to find that movie during any of the U&S promos.
I mean goto the store, and explain nicely to the people is CS, that you would really like this film but it is never in stock at the store. You wanted to use your upgrade coupon for it. and ask if they would kindly find a way (dont say pm) if its a nice employee they will try and go the extra mile and just take the $5 off (via their pm system) and just ship it to your house.
If they say no (what I call Plan B) buy it to your house and just go and return and re-buy with the coupon. Worst come to worst you lose some time, if the movie is that important to you.
I got a nice employee who was willing to just match the $5 since they would never carry my title in the store. As always it depends on the employee.