My normal Mercedes mechanic does not like to install customer parts. But since this was an A/C issue, I thought that anyone with A/C experience could do the job. I'm having a shop down the street do it for me and they told me that if I picked up the parts that they would install them.
Good point though. Would Fastlane take parts back? I'd like to know that for future reference. But since these parts were only $25 and $35 I could take the chance even with my budget! :-)