To throw a confounding variable into your equation, I purchased the Bunn unit for $250CDN as a refurb unit from a commercial coffee dealer on my way through Van

To throw a confounding variable into your equation, I purchased the Bunn unit for $250CDN as a refurb unit from a commercial coffee dealer on my way through Vancouver and have needed to replace one switch (generic, which I had in a parts box) and one thermal sensor which was about $10 with shipping. Commercial items are often available in classifieds, auctions and going out of business sales. There is an element of luck in finding something worth buying (and some opportunity cost for the time I guess?), but being patient and relentless with a few well set up search filters has let me get a lot of things for pennies on the dollar. I really want to do this with another item I seem to always be replacing, the microwave, but have found that a much more difficult thing to get ahold of at a reasonable price.