my e-mail is acting up today.
the best place [almost only place] to get 500e euros [hella brand] is at www.puma-access.com
talk to paul,tell him you are in the mercedes shop group buy thing. i don't think it was ever "officially"a group buy.
i think they are 350.00 something/range per pair. get '92 ones.
you can upgrade to a +50% hella h4 bulb [standard watt though].
some of the guys here did that.
i can give you a bunch of links/info on aiming them.