So how much is the "scene tax" with them fitted??
and If you posted this link on e38 you could cause the server to meltdown!! do it..you know you want to! 
Seriously, what is your issue with e38 and this so called 'scene tax'? As far as i'm aware you wont want these windows, they
are rare, they
do go for good money, because of this rarity and surely 'scene tax' is just a wanky way of saying 'market value'?
What parts have you wanted to buy that you feel have been subjected to the horrors of inflated price?
I sold my last set of Happich for £250. I could have put them on ebay and got alot more, as they were boxed, with instructions and 100% complete but was being lazy. So does that mean my asking price of £250 was me asking for more than they were worth? or was it me asking for exactly what they were worth?
and ben, yeah fitted badly they look wank. fitted well they can look great. having owned and used (obviously) these they are really nice in the summer, but nothing amazing.