OK, I've bought and sold plenty over the decades. I found an instrument at a store that's been around longer than Ebay, item is listed on Gbase...that doesn't take Paypal or a credit card. How do I conduct this transaction with some sort of protection, with a check-only business? If Gbase doesn't offer some sort of proxy, what's the point of Gbase? I really want this instrument, but don't wanna move fwd without some recourse.