I have a set of brand-new, never mounted LeatherLyke saddlebags that fit all years VTX1800. They are black, made of hard ABS in perfect new condition, lined and and with locking lids. I don't have the LeatherLyke quick-detach brackets, but they can be easily but permanently mounted to your fender rails. If you want to retain the quick-release feature, universal quick-release brackets would work.
We would have to arrange pick-up or shipping and cost to your destination.
Thanks, Gary