I have a 20 year old Frigidaire dishwasher that has given me little problems. One small repair that I did myself (and I am just so so on that sort of work).
I bought these rubber tips to cover the prongs that had rusted through but finally, the bottom of these racks where the dishes push against also wore out the coating and was putting rust stains on my dishes. So after pricing new dishwasher (wow!), I decided to order new racks for around $55 each.
So although I had to spend $110, I am hoping the dishwasher continues to service for a few more years. That would then be a major save!
Edited to add: Not sure this is allowed, but after searching 5 sites, found very good prices at Genuine Replacement Parts. Beat all other sellers by at least $30 for the pair.