Where can I buy the viewloader revolution eye force? Could someone give me a link of where you can buy it cheapest? I'm having trouble finding it. And is it discontinued? Or just having availability issues at the time?
Yeah, anything else under $50 runs into the problem that it's more expensive than a Primo, while still being slower feeding than any marker faster than you have now can feed, so it still proves to be the weak link if you ever decide to upgrade to a faster marker.