Maytag Dishwasher Racks The Basket In My Maytag Diswasher Top Racks Are Beginning To Rust Through. I've Dadded On Some Preventive?

The basket in my Maytag diswasher top racks are beginning to rust through. I've dadded on some preventive? - maytag dishwasher racks

Coating, but some years later, the problems continue. The dishwasher is old, but seems to work well. Do I need a new washing machine or can I buy a new basket? Is it still profitable?