From the catalog, click the "Buy Now" button
Type in your Paypal account email and password (I don't receive this information), and press "Log in"
Check to make sure the correct model is displayed in the box to the left, then click "Pay Now" on the right.
If payment is successful, you should see this screen.
Click on the link at the bottom right that says
"Click here to return to Murph's Models"
If you do not get this screen, stop immediately, and contact me.
Usually, the sale did go through, but a glitch caused the return link to be lost.
You should get this screen. Wait for it to send you to the download page, or click the link that says
You should arrive at a page similar to this that says the name of the model you purchased.
Click on the name
Wait for the model to finish downloading, then right click anywhere on the page and select "Save As..."
to save the model to your computer