On eBay, good price and may be just as good as the OEM ones.
At this price you should try anyway.
CLICK

 

And FREE SHIPPING! Great catch. Looks like a steal!

.

 

It gets cheaper from here:

Durable AC Heater Blower Motor Resistor For Mercedes-Benz A208 W202 2108206210 | eBay

I bought one of these for my Mother in law's C200. Works fine

 

When you compare these to the OEM price you can see they are a bargoon as they say.
I purchased one of these cheap ones some time back and thankfully have never had to use it, better safe than sorry.

 

Gotta love those bargoons. ( They are big smelly guys you find in a pub )

 

🤔🤤......👍😂

 

thanks for the heads up on this part. this is one that never hurts to have a spare on the shelf for. appreciate the links.

 

Hi Turbomar: does this part fit the Crossfire as well as C class / SLK class? I'd think so, and looking at the part it looks identical to OEM Mopar...but the seller doesn't list the XF as compatible. Thanks in advance!

UPDATE: ignore, please. I see on another thread in this excellent forum that the MB P/N 2028207310 is compatible with P/N 2108206210 is compatible w/XF.