I sold my miata and have this random stuff leftover in garage.
1. hardtop/softop latches, used but worked fine. $45 shipped in cont. US. Also have the receivers that attach to interior sides of car (the things that hardtop side latches attach to) for use with hardtops, $45 shipped, or all for $75 shipped.
2. soft top cover, brand new, never taken out of storage bag (photo from ebay)- this covers the softtop and protects it from elements. great for cars that are left parked outside for extended periods, especially if softtop leaks or you want to leave windows cracked to keep car ventilated. $65 shipped in cont. US.