Ken,
Yes, you're right - ink and paper is the big ticket over quite a range of amortization estimates.
Everyone (who's interested) needs to make their own determination about amortization. Over the past 4 years I've gone through 3 Epson printers - 4000, 4800 and now the 3800. The 4000 was Epson's big-leap technological entrant to the smaller scale pro printer line. Since then, each new model made incremental improvements over its predecessor, but it's cumulative, so gamuts and overall performance just gets incrementally better - and the same will happen again probably within the next 6~12 months when the 11880 technology gets embedded in a 17" model. When that happens, I predict I'll sell the 3800 and buy the new one, because I think it will be a no-brainer from both an economic and technical perspective. So two years is probably an over-estimate of the 3800's economic life for me. But as you say, so what?