I am looking for an affordable SSL Certificate that works with Google checkout, any suggestions?. Thanks!
Any 3rd party issues cert should work. Godaddy is probably going to be the cheapest. Geocerts is fairly inexpensive as well. Technically you don't need a SSL for Google Checkout. Since the payment takes place entirely on the google website, there is no reason you need to use a SSL connection.
GoDaddy has their SSL Cert at $19.99/year and Namecheap has it at $14.88/year . So they should be quite affordable. The most basic SSL cert should do the trick nowadays and ensure compatibility with currently available web browsers.