It is close but AFAIK laser is cheaper than ink even if you buy only
refurbished carts or refill kit.
Ink cart lasts a few hundred pages for about $30 nowday while laser
cart could last a couple thousands.
Here's an example: (real example based on my own experiences)
HP 940: $30 each for black and color. I've gotten around 100 or so
pages on color before it runs out. That amounts to $0.30 per page
just on color alone. Black lasts longer, closer to 500. $0.06 per
page black only. If you used refill kit, you could get away with as
little as $2 or $3 per cart, which translates to $0.03 per page color
and 6/10th of a penny per page black.
HP Laserjet 6L: I've gone 5 reams of paper on one new toner cart
alone. New cart is around $100, 3rd party for less. Assuming only
official HP cart: about $0.04 per page. I've gotten 3rd party off
eBay for a lot less, about $10 each. This reduces the cost per page
greatly to less than a penny each. At this point the paper becomes
more expensive than toner
Factor in refill costs at about $5 per
cart and you'd have to print several pages just to waste one penny
worth of toner!