You'll notice a trend in the herp community where website evolution stopped right around the good old year of 2002 or so....
I always emailed AP. Order turnaround time was not speedy for me, but I didn't mind.....it just made it all the better when I got that giant Fedex box in the mail.
I recommend calling Pro Products......I can't remember the owner's name but the information he gave me was worth it's weight in gold about setting up your cage and the heating requirements needed.