$517 for a converter refresh?

There can only be two reasons when the cost disparity is that great.

1. The expense company is screwing its customers.

2. The cheap company is cutting corners and/or doesn’t have the same equipment.

An example of this is a cylinder hone. Some hones are around the 200k mark and they go down from there.

That is an example of the newest, most expensive machine doing things a lesser machine can never do.

Price shopping is a tricky proposition.