Ive seen reports of people getting the canon mount version and glueing on a af confirm chip but that wasnt for me...
Yeah, I did that on mine.
But then I use it on live-view anyway (out of habit of all my MF lenses), so the AF chip doesn't do much. exif data is nice though, to at least sort the photos. (but i think i glued the chip slightly off where it should be, or i got glue on a contact, sometimes it just freaks out...)
meanwhile, I paid about $250-300 for mine off ebay 2nd-hand. Even now they're still going for $450-500 on ebay as brand-new auctions.
$375 sounds like an amazing deal for this poor-man's zeiss, i'd buy another one if i didn't have it already.