AFAIK based on several new Hondas bought recently all accessories are fitted by the dealer. I have never paid specifically for fitting as the cost has either been sucked up by the dealer (a small independent) or has been included in whatever options pack I have selected.Frustrating as they were all selected before the voucher came out so not sure why they didn’t get installed in the factory. Maybe just how it’s done in the bike industry. Should maybe change dealer