2009 27" iMac gfx card replacement

So, my 2009 iMac has finally shat the bed. Pretty sure the gfx card is to blame as it has the pink lines on the screen and won’t complete a normal boot. Will go to safe mode though.

Anyone know of a good source for replacement cards? failing that, anyone want a 27" iMac with bad GFX and dodgy dvd drive (yeah - it doesn’t work either).

it’s a pity as the screen is really nice :confused: