I've not had luck finding it at any of the shops here either, including Car-Quest who usually has everything. They could special order it, but it was more expensive and took longer than just ordering it from an online vendor.

I keep an extra meter on hand "just in case".

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]