Congratulations and thanks, Sanjay. You did a decent thing by making the effort and I am glad it worked.
Of course you could argue that the seller will soon be back under another name, but that is only the static part of the story. The dynamic part is that the more likely it gets that fraudsters are found out and have some kind of punishment (if only having to start from scratch at eBay), the higher their cost of doing business is. That means that either their prices must go up to cover that risk or their income goes down, so they are more likely to give it up. By hitting one dealer, you are having an indirect influence on all fraudsters.
I know this sounds theoretical, but there is scientific evidence that it works this way, from a study into corporate fraud done in the US. The correlation between incidence of fraud and chances of getting caught was shown and a model showed the likelihood that it was not a nonsense correlation.
Peter