I should clarify that so far, I have not been charged a restocking fee at all. The local counter guys have known me for close to 20 years, so it was no big deal to show up and return it. It was the corporate customer service people over the phone who wanted to do an RMA process and charge the $190. Maybe they will try to charge it to my card after the fact, but hopefully not.
I guess I started the thread because I got to work this morning after the return and got the VM from yesterday mentioning the 10% restocking fee. No harm, no foul at this point. It just surprised me.
This was a machine accessory that ended up being designed differently that I thought it would be based on a data sheet and catalog photography. If I give any more details, you will all know who the company is. :-) No point in bringing them up as it stands now. If they do charge me, you will hear about it.