That's 16.5 Keys or $31 USD. Goes for $40USD on the community market, if he's a regular edgy spy player get it, if not convert it to money and send it to him on PayPal.
It's like a giftcard situation, sure, you got something which you can use for a shop but wouldnt it be better to decide on what you want to spend it on yourself?
I got 110k Faceit points so its not like I will be spending all of points on a birthday gift for him, all I know is that he plays alot of tf2 and almost only spy.