Hi,
I understand, however, paypal is very sercure, and you can get your money back, like on ebay. However if i ship and you do not pay (i have to be 100% sure too) there is no way of me getting the money, so can i just say that i have over 2000 posts on this forum, i am not about to rip you off, however if i was to, you could just start a paypal dispute and get your money.
Rob
Edit: also could i ask a small favour? Could you give me feedback on the quality and durability of the sprocket when i make it, as if it turns out good, i may market these, or make some for my self for future projects, thanks