The problem is the wheel is a unique design needing unique fittings for the plastic trim. Until a third party starts making aftermarket plastic trims that also fit , Honda have a monopoly ,and other car brands also ask silly money when they have a monopoly.
Unfortunately the number of Jazz fitted with these unique wheels is possibly too small to attract aftermarket production. Not sure these wheels are common even in Japan.
Maybe someone ,perhaps in China, will tool up with moulds to produce alternative designs that will clip onto these wheels ,( or illegal 'Honda' Fakes. ) They might already do so. But with low production numbers and shipping from the far east they may not be particularly cheap and may not add value when the car is sold.
In the past with other car brands I have removed vulnerable looking expensive OE Plastic wheel caps before they got damaged, and used cheap but attractive alternatives until refitting the originals on resale.
Maybe someone will see the business opportunity of repairing and respraying damaged caps on an exchange basis.
Either the whole job or just filling and finishing then getting a batch of them colour matched and sprayed professionally .
There are quite a few local firms who make car mats custom cut to pattern. Easy enough to include the MK 4 in their catalogue. Even My Honda originals mats were made in the Netherlands. (I got them at a bargain price of £50 , but suspect I could have got something just as good for £35 ,possibly even made by the same OE manufacturer.)