MP Convoy comes in a box with no window. So if you were planning on keeping it MISB, then you'd never ever see the toy. Someone could just put a brick in a MP Box and you'd never know.

20th Anniversary Prime is the same as MP prime with the following execeptions:

Shorter Smokestacks
Battle Damage
Clear packaging

The BIN on this auction + shipping is about where most of these auctions end up.

http://cgi.ebay.com/NEW-SEALED-20th-...QQcmdZViewItem