Apparently there is an instant rebate on Tropic Thunder Blu-Ray at Costco Wholesale. This rebate is not advertised on any sign I could see, and I have not looked up the details as to when it may expire, so YMMV. Tropic Thunder sells for 27.49, and the instant coupon rings up as $7.50 off, bringing the Blu-ray to 19.99. I don't think we'll see a price this low on this for a while.
Good luck!
Good luck!