Not finding any ICC profile for Epson Stylus Photo R300, seems less costly to acquire a new printer that has free ICC profile than to buy from custom profile sites.

Unfortunately, we don't have any profiles for your specific printer. It is a difficult decision for us to choose which printers we will support and which ones we will not support. We start off with the most popular printers that our customers use and then go from there. We are a small company, and creating and supporting profiles is a monumental effort. We hope that you understand. With this being said, there are excellent 3rd party profiling solutions, and here is a link to some of our recommended companies:

http://moabpaper.com/profile-providers/