Do not go for it!!
Paypal has a buyer protection guarantee which works only if the item has been delivered to the buyer via some type of commercial registered service (mail, UPS, FedEx etc.).
In this case, the buyer would claim that he never received the item (as there is no tracking number since he picked it up himself) and would ask for the money back from Paypal. Eventually Paypal would reimburse him, and you would loose your money and your kite.
I hope this helps.
I've been BOMBARDED by scammers from my posts on iKitesurf. I've been offering people my facebook information and asking them to connect with me to view pictures of the kite. I use this as an opportunity to poke around on their profile and see if there's anything related to kiting on there.
NEVER EVER accept a bank/cashier's check or a money order or arrange for a courier like Matt said. This is 2015, if they won't operate through official channels and commercial shipping services, their intentions are impure.
The stupid part is, they don't even want the kite, that will almost 100% end up in the garbage...they're just trying to scam you for a smallish transaction with a bank check.
MAKE SURE it's a real human before you go any further.