Product review (5 stars): Easy to replace, low price
The switch on the dryer quit working, so I looked it up and found the part number, 3406107.  I saw the price, under $10.  I watched a video showing how to replace the part, under 10 minutes.  "Add to cart".  Two days later, after watching the video again, my father and I took the top off the dryer, I pulled the old switch out, plugged in and screwed on the new one, put the dryer top back down, and the dryer has been working fine since then.