I bought a Pro-100 several weeks ago when Adorama had it for $100AR with free paper. For that price, I thought it would be worthwhile to get some additional control and convenience over my prints. So far I've made about 30 prints (mostly 8x10) and the indicators still show everything as full. Does it drop like a cheap car fuel gauge or something? I.e. 300 miles to half tank, 350 miles to 1/4 tank, 10 miles to Empty!
I have a Pro-10 and the ink levels drop fast in my use.
I have some 13 x 19 prints I have done, and those are quite a bit bigger than 4 x 6 or 8 x 10. Could ba a "duh" moment, or maybe I had different expectations.
I think I have done about 10 each 13 x 19 and probably 20 8.5 x 11 and maybe a dozen 4 x 6, and I'm through the starter inks and getting into a 3rd change on some.
The Pro-10 cartridges have an ink volume of 14ml and cost ~$16 each.
The Epson 3800 cartridges have an ink volume of 80ml and cost ~$60 each.
Simply based on volume and OEM ink costs, Canon is $91.42 for 80ml of ink (5.7 Canon cartridges for 80ml). This doesn't account for wasted ink during cartridge replacement. Six cartridges = $96. Both printers don't use the same number of ink cartridges, so a direct comparison is difficult.
There is a print cost comparison at Red River Papers, and the Canon is roughly 2x Epson per print in their testing.
There is an established Epson ink aftermarket too.
So, the smaller cartridges explain why the levels drop fast on bigger prints.
I find the Canon Pro-10 output very nice, but it isn't economical*. It would have been better to figure this out beforehand
* inkjet printing isn't "economical", but small ink cartridges don't match well with bigger prints...