I've purchased 4 or 5 replacement door handles from RockAuto and off eBay. They're inexpensive (around $8) but they seem to work fine (never had one break to-date) as long as you make sure to lube up the internal door linkages and the door latch mechanism. You can paint them if you feel it's necessary, but between primer, paint and clear coat it adds significantly to the cost. I find a light grey primer can give you an exact color match. I recommend a trip to the hardware store for some dish head screws, flat washers and nylock nuts to reinstall the new handles. Stainless steel screws are a good choice, but don't use SS nuts (you'll learn a hard lesson regarding SS hardware if you do). To drill out the old OE rivets, be sure to knock the steel center pins out first.
Tip: Take note of the location of the yellow rod clip before opening/removing it.