I purchased my Himalayan hard boxes (panniers) from eBay. I think you’ll agree you can get them for a great price, and if your experience is anything like mine, you’ll have them within a week (depending on your location). Amazing service!
Royal Enfield Himalayan Hard Panniers
Royal Enfield Himalayan Hard Pannier Racks
Royal Enfield Himalayan Hard Pannier/Racks Complete Kit