If the toilet is running from the fill valve and it needs replacing, i usually charge $150. if it is the flapper that needs replacing i charge $99. These are usually the 2 places you fix a running toilet. I would say between $75-200 for the repair. I live in Los Angeles area
Sunny Plumber - Fix Toilet
That depends on what is wrong with it.
You could search it on alibaba.com,lots of company are running them,as for price you could choose for yourself,too.
Get a new toilet
You just buy a new one, you can't fix it, cause you turned it on right after picking it from the toilet, which you shouldn't had to do :(
12 gauge
duct tape it... yay!
call the plumber
By buying a level and then leveling it
Endrollphobia
The 'fill valve' is the one on the right side of toilet that has a pipe underneath running to a small valve on the floor or wall. These often go faulty. Not worth trying to fix it - new ones are cheap and easy to fit.
I will fix it