Is it possible to buy HTML templates made by components somewhere?

Question

HTML

Hello!
We need ready-made HTML templates, which, due to the peculiarities of development, must be executed by components, preferably with a "bem" structure, such as

That is, each block is a separate folder, with its own layout, its own styles and its own js.
I downloaded null templates from templatemonster (Don't buy blindly), everywhere it's just common css, common js and html for each page.
Specifically interested in the templates of online stores. They are planned to be stretched on a self-written engine, in which templates have such a structure.
Or rolled his lip?