I've been considering a Rolex gmt ii ceramic that comes on a rubber b strap. It has the original bracelet clasp, but the actual bracelet is not included. I have looked for listings for bracelets without much success, and I was wondering if I could simply go to an ad and buy one? How much would something like this cost? I know I should just buy one with a bracelet, but this watch is being sold with a significant discount. Thanks for any help.