it's amazing to me the things people will tackle,to save a few $$,? ego,-?-don't trust repair people??- rewire a house,do plumbing,fix gas or electrical appliances, w/o the faintest clue as to what is code or safe practice. it's nice to get an idea of what the problem or cost may be ahead of time but there's a lot of bad info out there and one [myself included] can get in over your head. when someone whose spent years learning a trade does a job, they are looking at things a DIY wouldn't even be aware of....in this case she probably does have a weak igniter, but if she puts it in wrong or uses the wrong one, or breaks the replacement while installing it-
. this job would probably cost $100+ over the cost of the part. the oven would be checked for other problems, it would be safe, and restored to it's original condition. i think that's worth the extra money.