Hi Ficklefaerie
I made my first purchase as well for the same reason as I wanted to support the site and a fellow seller as well as see what my buyers might experience.
There is a button at the end of your purchase that you click on that should take you to Paypal. I was able to click on it and it did connect me through to paypal.
It even had a message that said you are not done with your purchase until you make your payment via paypal.
I don't know if this helps any, but if you have any other questions please let me know and I can see if I can be of more help.
Hope you have a wonderful night!
Janice