Just a tip - buy and install new door panel clips so your door panel fits nice and tight when you're done. Dorman part number to fit our cars is 799-125. It's a box of 15 pcs and you'll only need about 10 or so for one panel.
Regulators are around $125-140 or so, depending on what company makes it. My recommendation is to NOT buy the cheaper ones in the $40-60 range because you WILL get what you pay for. The quality is night and day between the two types. I've replaced them in 3 of my four doors and the last two I purchased were A1 Cardone brand.
It really isn't a bad job at all. If you have an open end/box end 10mm to take the bolts out of the window, itself, then it will be easy. It's very straight forward.
