I have a Maytag Performa oven around 10 or so yrs old, could be more, not sure. The stove top works fine, but when I want to use the oven and set the temperature, it takes about 15 minutes or so before it ignites and then I wait about 5-10 minutes for preheating. It cooks fine, the only problem is waiting for ignition.

What most likely would be the problem? Since I am not handy, what could I expect to pay for the part and labor approximately?

Thanks