yeh, its not bad, my wife is it at home through the day so she just keeps reloading the printer and i put 4 on a page so it takes 1250 sheets to do 5000, and printer does upto 20 a minute so thats just over an hour!!
A cartridge cost me £8.50, a reem of paper a couple of quid, takes about 6 reems so not very expensive, yours will no doubt look better, but from experience and reading on here, effectiveness of leaflets is all prety similar, and obviously depends on the area anyway- whether they need cleaner or not.
I dropped about 200 last week and had about 4 calls, so im happy with them.