Comment by nutjob2

Well, the 'active ingredient' in these things is the bulb and a reputable brand (Philips medical) runs about 150 euros for a 100w tube with a R17d plug:

https://www.francelampes.com/en/30214-r17d-tl-100w-01-uvb-17...

You then just need the right ballast for it and a basic timer, maybe a reflector and stand and you're in business. Getting smaller qty is going to be an issue since these suppliers tend to sell in packs of 10.

Apparently the a ballast runs about 70 euros and can power two bulbs.

I might look into it since it's down right affordable compared to the alternatives.