Hey, my first post here.
I am the new owner of a planet ocean with silver bracelet. I am thinking of getting the black rubber strap with orange stitching & will need the clasp too. Where is best to get these. I have been quoted £430 for both!!

 

They come up from time to time on the sales boards of various forums but obviously the best place to get them is from Omega. If you go the eBay route be careful as there are plenty of fakes out there. Another option is to get a non Omega version of the same without an Omega clasp. They are out there too.