The cowls do come up for sale from time to time but are usually for smaller engines.
I had a similar problem with a Tohatsu cowl. I did look at repainting it and even went as far as buying the genuine decals for £85! To get the factory look paint finish - a local bodyshop should be able to do it, if you prepare it first, sand, fill any deep scratches, etc. In the end I sourced a new cowl (mint but with hairline crack at one corner) from Extreme Marine.
You could also consider using as is - but fit a splash cover. Not that EBay nonsense, but a made to measure cover with air vents and Suzuki branding. Ribquest (Sheffield) had them on a 4.8m boat in theeir gallery pictures before they were bought over. Looked the mutts nuts. Might be worth dropping them an email to see where they sourced them from?
Is that with or without VAT?