Just found a good source for Hella brand Euro headlights. I called Hella directly and they referred me to a company called Puma who sells a set for $375 (new) for my 300E.
Shipping was $15 or so, so about $390 total for a new pair, not too bad! (side markers included)
Give em a call @ 1-800-354-3552 and they'll even switch bulbs in and out for you depending on your desires.