Laser or LED is the way to go. Forget inkjet desktop printers... have you ever seen an inkjet paper print get wet? Useless.
For example, an
Oki c330dn can be found online as low as $275 (new).
The Workforce 1100 costs about $100.
The Oki c330dn prints color 5 times faster than the Workforce 1100, and B&W twice as fast (using Epson's "laser quality" speed figures). Its duty cycle of 45,000 pages per month is also twice as high as the "business" Epson B-510 (rated for 20,000 pages per month) to say nothing of the Workforce 1100.
And we haven't even gotten to the consumables yet.
Oki toner costs about $100 per color, and each cartridge yields around 3,000 pages, for an average cost per color of $0.03 per page. Obviously that assumes you have 5% coverage of every color on every page.
Epson 69 cartridges for the Workforce 1100 run around $16 for OEM ink, which will give you about 345 pages according to Epson. That works out to almost $0.05 per page; or, if you bought in the same quantity as the Oki toner, you would be paying $140 for a similar amount of coverage.
And considering that each machine comes with the supplies, $275 for an LED printer with four 3,000 page cartridges comes out as a steal. A new Workforce 1100 with 3,000 pages worth of ink doesn't cost $100 -- it would actually cost $600 INCLUDING the initial set of ink they supply with the machine.
Of course, you could get a Workforce 1100 and then run someone else's ink. Costco may be the way to go; I'd avoid the alternative cartridges you find on eBay or at some stores like Fry's. Even so, assuming that a refilled cartridge gives similar yield, you're looking at $350 in ink to make your $100 machine match the yield out of the box with an Oki. Oh, and good luck getting proof-quality colors off an Epson with alternative inks if you don't profile it...
I would really only suggest using an Epson desktop machine if you were planning on printing small color separation film sheets.
