I bought the whole assembly air box/front cover/tubes for less than that from:

Potomac German Auto
4305 Lime Kiln Road
Frederick, MD 21703-7500
(301) 428-8239 ‎

Maryland Store Search

I live minutes from them and have bought several MB parts for the Crossfire there. The plant managers name is Marcel (phone# 301-831-8151 ext. 200)... there is still some discretion that the Crossfire is an MB SLK so I'd recommend knowing which part # you wanted and what model it was off of.