Product review (5 stars): A fraction of the repair cost compared to calling an appliance guy!
We have an old Caloric brand wall oven that came with the house. I have no idea how old it is, but within a year or two of living here, the oven stopped working. It would glow, but no gas would come out and it would never start. I called an appliance repair man who determined it was a bad ignitor. He explained to me that the gas won't turn on until the ignitor reaches a certain temp, so either the ignitor wasn't getting hot enough, or it wasn't sending the signal to turn on the gas when it did. Either way, the problem was entirely with the ignitor. He replaced it, and something like $200 later, the oven was back to working. Until it stopped working again about a year after that. This time it didn't even glow, the oven would just do nothing.

Instead of another expensive repair, I decided on a hunch to assume the part the repair man brought was lower quality than the original. I looked it up online and found a match here on Amazon. I felt confident that I could swap it myself now that I saw the repair guy do it, and sure enough this did the trick for a fraction of what I would pay him to come back! Its been a little over a month since putting it in, and so far so good. I'm hoping this will last longer than the last one, but even if it doesn't, worst case scenario is that I'll spend $20-30 on an annual repair until we can afford to replace the whole oven! I can deal with that.