Programs can be purchased with a credit card using PayPal or PayMate. Both are easy to use and you do not need to have an account with them to get started.
Programs can be purchased offline if you don't have a credit card.
ChessConcepts can be purchased for $20.
ChessPuzzles can be purchased for $20.
ChessQuiz can be purchased for $20.
ChessRater can be purchased for $20.
ChessTeacher can be purchased for $20.
Any two programs can be purchased for $36.
Any three programs can be purchased for $48.
Any four programs can be purchased for $56.
All five programs can be purchased for $60.
Download files are about 2.5 meg in size, so they are relatively quick to download.
You may wish to register offline because you don't have a credit card.
You can register by sending bank drafts in Australian dollars or a money order or bank cheque in US dollars, payable to W.Jordan.