I installed the $110+ MX5 ND sill protectors from Moss Miata one year ago and Im changing back to the original black factory door sills. I am selling the current sills as soon as my new black sills arrive which should be in about 10 days. The new factory sills are $36 and the MX5 metal sill protectors were $110 plus shipping. I am asking $50 plus shipping firm. The metal MX5 sills(both) are in very good condition. There are a few scuff marks on the drivers side that can be buffed out. As I stated, I am waiting for the factory sills before I actually sell my present ones. Very easy install.
Pull of your trunk lid sills and snap mine right on. About a two minute job.