Good luck on the hunt. I didn't realize new prices on BMW ICVs had gone crazy, Quick check results of usual sources: AutohausAZ $393; Guten Parts $438; ECS $458; FCP $515.
Ebay: seller Germanonly has two Bosh #13411433626 listed: one for $67 +$12 shipping, one for $47 +$12. I haven't bought from them before but maybe worth checking out.
