How much does it cost to replace a clutch in a 94 Miata?

It be manual. Parts + Labor.How much does it cost to replace a clutch in a 94 Miata?
Labor is the hard one to figure. It is a four hour job (some shops may use a different number). So what ever the shop rate is times four.
Parts are a little easier a basic clutch kit is about 300 dollars at most retail outlets. You can get a unknown quality light weight flywheel and clutch kit for about 350 dollars on up. The "Happy Meal" from Flying Miata costs 599 dollars.
Now the reasons for going with a set up like the Happy Meal is that the light weight flywheel is to free up horse power for acceleration and to save the mechanic time on installation. If the flywheel needs to be resurfaced it adds time to the bill and if it can not be waiting for one keeps the car off of the road. Some shops will let you provide your own parts, so if you elect to buy your own parts find a shop that will work with you on this.
I had the "cheap" e-bay clutch installed in one of my Miata's three years ago and it worked fine. It was a bit cheaper back then. With labor my total bill was about 600 dollars. Which may sound steep to some, however that is no more then what a set of new wheels and tires would cost. So for me it was a good investment.
One other thing, I also had the rear seal replaced at the same time. I did not want to have to invest all that money in labor and not get something fixed while it was apart that might need done.