Just like today's printer cartridges, the 'print material' used by 3D printers is insanely expensive. That's gotta change for any essential daily lives application.
I'm sure 3d printer tech will end up with ready to use devices, printing metals as well as various kinds of other materials. I may prefer buying a panel and electronics, and print my own metal enclosure for my next monitor (or external disk or electric outlet or back cover of my phone or... you get the idea). Cost will be a factor, but after the utility.
To be honest I don't know enough about industrial pricing to understand if it's ridiculous or not, 30x from raw material to something being retailed at a consumer level doesn't seem unbelievable to me.
Markup on a black ink cartridge (the original comparison) is something in the region of 200x, so nearly an order of magnitude higher.