Ed:

I see nothing in your post that indicates your time of billing.

PayPal, of course, gives you no option.

When you put your "Buy-Aero" hat on, the service you're providing is a brokerage. I didn't know anyone was offering this service for models. Sounds like it would be a lot easier than a person scouring up all the bits for himself.

What can you do for me on a Bridi F-7F?

Bill.