It's impossible to say when something will break. It has an electronic control board ($167) that may go tomorrow or last for another 10 years. As far as the rest of the range, there is nothing complicated or expensive in there. The oven igniter might fail within a year or two, it goes for about $40-$45 and takes 5 minutes to replace. If you decide to buy a new range, after the warranty period's over you'll be in the same position you are now (broken top aside).

It's a big glass thing that's not cheap - most people are afraid to deal with the replacement, however it's really not that difficult. One thing I want to mention is you'll have to remove the drip pans and the burner caps. Each drip pan is held with two small screws. Those screws are sometimes baked in there and might break when you put a screwdriver to them, so be prepared to possibly having to drill some of the old screws out with a small drill bit and replace the broken screws (if any). Doesn't happen every time, but it happens.

We sell the new top for $218 (out of stock, will take 1-2 weeks to get). See breakdown diagrams and parts.

Hope this helps.

That's what it looks like. Keep in mind that #140 is a pretty uncommon part and may take a few weeks to get. If it turns out to be a wrong part or if you change your mind, you'll still have 30 days from the delivery time to return the part.