I have purchased the odd part for my computers here in the past and have always found the prices quite reasonable even comparing to eBay and other online stores.
This morning I popped in to find a replacement processor fan for my kids old computer, the gentleman I spoke with went "out the back" and came back with a couple of second hand fans, compared them, picked the most appropriate & said "you can just have that, it saves it sitting around."
I would have been quite happy to pay for the fan & or his time, but I really appreciated the gift.
I'm sure they could not always afford to give things away, and I will definitely shop there in the future!