£200 incl VAT which is quite a bit cheaper than the original.
I'm tempted.

This is a screenshot. I can't see a way to edit it on my phone.
Now I found a way to download just the image
I saw them in person while I was in China last Nov.
I tried one on at a watch fair. Nice, but 38.5mm is slightly small for me.
I'm assuming you mean after the famous painting "Great Wave off Kanagawa" rather than "I saw a wave pattern dial and I thought it was great": the dial is available to buy over tinternet certainly for various Seiko models: I'm prettyy sure I put one into a Seiko Sumo a few years back.