I was wondering what kind of "use" you had for the coin purse.
I keep thinking I'll hear about a deal better than amazon's current pricing ($24.99 apiece minus $10 for ordering both = $39.98)...but I haven't.
Best Buy looks like (via bb.com) it's going to have a sale price of $24.99 on each disc with a deal you can get $5 off with the joint purchase of a TS3 videogame. Even gamers (ouch! ) would realize that if you want both movies you're better off with the amazon deal.
DeepDiscount has each title for $29.85. Wal-Mart.com has a price of $24.86 apiece. All of this, of course, is subject to change. I'm still kinda hoping that we might see some kind of further price drop at amazon as we approach release date (although my hopes are not real high).
I'm about to pull the pre-order trigger via amazon myself...go with the free shipping...and go through the agony of having to wait those precious few extra days in order to pay the lowest price.