You would pay them $6 for shipping/handling. If you later decide to purchase the product, you would no longer pay the shipping/handling charge.
It's not the best method, a simple download would be more convenient for some of us, but many vendors don't offer any means of testing before purchasing at all ...
Fusion Brain Version 6 Released!
1.9in x 2.9in -- 47mm x 73mm
30 Digital Outputs -- Directly drive a relay
15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
Buy now in the MP3Car.com Store