I wonder, if those sellers on Flippa selling multiple autoblogs with lifestyle theme and WP robot use the developer version of this plugin (which is very expensive) or its nulled version? It's hard to believe all those sellers act legally, but from other side, i think buyer who will find out the site uses nulled version of wp robot may require the seller to refund the money. In one word, do u sell such sites on Flippa? Any success? Or on which sites/forums u r selling sites with nulled versions of wp robot or autoblogged? Thanks in advance.
I would say if the seller using developer version with valid license, they MUST ALREADY mentioned on the description, so if you don't see it, that means most likely is nulled version
This would be nothing impossible IMO. There is practically no way to specify whether their licenses are valid or invalid until wp-robot makes a public license checker similar to whmcs and cpanel.