Where can I sell plate sig. lithographs or vintage paintings in the style of the masters?

Hi folks,

Right now I am on eBay, and some other platforms and sell paintings and limited editions all used and vintage. Most of the works I acquire offline and online (if the same work is on eBay for 100$ I got 20% off and list on 1stdibs for $350 and accept the offer around 250$, just an example)

After Commission and accepting offers, on average, I make 140$ profit on arbitrage and 450$ on normal paintings I bought from offline.

But the problem is, I risk that the same work could be...

Where can I sell plate sig. lithographs or vintage paintings in the style of the masters? WordPress ...