Originally Posted by Retro Grouch

One broken spoke is a data point, two might be a coincidence but 3 is a definite trend. You need a do-over.

If it was my personal bike, and the rim is in good condition (quite questionable), I'd replace all of the spokes using the existing hub and rim mostly because I enjoy the process of building wheels.

Unfortunately, one of the dirty little secrets of the bicycle industry is that it's much cheaper to buy a pre built wheel than it is to buy the components separately and pay someone to build the wheel for you. In fact, when I had the ability to buy components wholesale, the cost of the components alone almost perfectly matched the price I'd have to pay for the same components assembled into a wheel. People on Bike Forums frequently mock factory built wheels. The truth is, however, that the huge majority of bikes sold today come with factory built wheels and most work out okay. A new factory built wheelset is definitely your most cost effective solution.