I'm trying to decide whether it is worth roughly $25 to do this mod.
I only paid $6 for mine (got it from a goodwill store, surprisingly it had the adapter with it)
I can sometime get file transfer over 8MB sec between my laptop (wired) and desktop (dell wireless 1506 an atheros chipset 1x1 card) but in order to do that i really have to tweak the position of the router then accidentally moving it an a few centimeter can cut that down considerably.