How and where to sell psd layouts?

Question

Layouts and prototypes

Hi all!
The question is, where and how can I sell mock-ups for Air Conditioners website? The question is that he made up the site (only the main one), after that the customer abandoned the project, saying that I’m working slowly, but for some reason I’m 99% sure that he copied the layout of the main one, and saved several thousand rubles on this, now I want to sell layouts so that at least work something out.
I will be grateful for any help.