Even if there was a clone, I don't think any Provari owner would countenance it. Much of what they love about Provaris could not be cloned anyway (made in the USA, great service, etc.).
But if you want a good regulated mod for less money, I would also give a thumbs-up to the Sigelei Zmax v3, which is only $42 right now at 101Vape. The iTaste MVPv2 is also a champ at $40 (internal battery included). Both are VV/VW and come with great reviews from users.