I got you at 41 for these 2 keywords:
Epson ink cartridges
Canon ink cartridges
and you might be falling further.
Google is cracking down more on these types of pages and the individual credit a SE assess to page is going to count more in the future than just the credit the main domain has earned. Ok what the hell does that mean Jaan?
Well Google is getting better at judging pages of websites separately and accessing value to each instead of seeing a high
PR domain and giving the "green light" so to speak at the pages and directories underneath.
You need better content on these 2 pages. I wouldn't consider these doorways as has been suggested above. I understand what your trying to do here, but the bottomline is Google doesn't. I know you want to link out to each individual product for each ink cartridge brand and that is fine, but your content is "cookie cutter" on these pages:
http://www.printcountry.com/epsonpri...cartridges.asp
http://www.printcountry.com/canonpri...cartridges.asp
Your basically cutting and pasting the different brand name in for the same content. Write some great unique content, get some product reviews in there. Look at your competitors in the top ten, what the heck are they doing that you are not?
Secondly you need better and much more relevant links to these pages instead of just to your main domain. Google is looking at this much more now, since Jagger 1-2-3. Getting links from relevant websites to Canon category page would be great and link less to your home page if the link is more relevant to Canon.
Lastly rankings are ever changing. Don't get hung up on them.