Money should not be an issue when it comes to selecting a discus seller. You usually get what you pay for, but there's more to quality that looks alone. Sick and unhealthy discus can cost you more than the original price in the long run. Here is a thread for reference that is based only upon my personal experience.
http://forum.simplydiscus.com/showth...cus&highlight=
BTW, I have never heard of a "green discus" other than the wild green, and a few months ago they were using the same photo for a different name...
Everyone please remember, commenting in this section is for first hand experience only..