Ok so after lots of head-scratching (maths is not a strong point for me). I have configured the store to take the second payment based on whether you have ordered 1 or 2 badges. If you ordered 2 badges remember to add 2 to the basket!
You will need your PayPal transaction ID's - nope turns out they don't match! to hand as I'll be using them to validate the payments (so someone doesn't just look at this thread and put in your username and get your pre-payment knocked off their purchase!).
You must use your PayPal email address when you make payment so I can verify it's you.
As we hit the 50 minimal limit, up until the point of production we can probably squeeze a few more orders in if anyone missed out. Just select this in the store, but please still add your name to the list below.
Let's try and get all pre-order final payments made by this Sunday please (5th July). Delivery should be end of July early August.
Updated the instructions, I thought the Paypal transaction ID's would match turns out you are given a different number to the one I get when the money comes in. Just using the same email address as you use for Paypal should be enough.