As long as it's the right time and place for it, sure why not.
Somebody (I used to know) asked me a favor to get Bosch glow plugs for his 240D overseas. I said okay, here's how much they cost online and with tax, etc. will be about XXX much. I didn't even ask for any $$ for my time and money, and he comes up to me to ask if I can be paid for LESS than how much they cost.
I said sure, but then they'll be used glow plugs if he does.
