I ordered the parts from AppliancePartsPros.com and they arrived the next day! I followed along with the video on the website and completed the whole repair in about 20 minutes from start to finish. It was a piece of cake! My only complaint is that the part only cost about $17 but the agitator grease needed to lubricate the washer cost $27. I just used a little bit, and I probably will never use the rest. They should include a tiny tube along with the parts that contains just enough to get this job done.
At any rate, I saved money doing it myself, and I didn't have to take time off work to be here with the repair tech. This is a great resource that I'll use again, if I have to.