Yes. Laserjets are more expensive if you compare with ink tank printers. But inkjet (with cartridge) printers are notorious for being quite expensive.
If you decide to use a 3rd party toner, then laserjets will cost almost the same as an ink tank printer. I have run out of ink in my ink tank printer and the cost is actually around 30p Iβd reckon for a colour print.
The major factor between ink tank and laser jets is that laserjets print very fast. Almost 30-40 ppm will be standard while inkjets would print like 2-3 ppm. (Pages per min). So if you are scanning and photocopying a lot of stuff, the inkjet will be super painful.