Why should I buy PrestaShop web template?

There are different platform for developing Website Templates like osCommerce, SharePoint, VirtueMart but why prestaShop is different from all.Kindly i need some mature points which makes the Prestashop best amongst all.There may be many common points but try to tell me only difference.Why most of the designers recommend prestashop?

They don’t, and this post worries me. It’s teetering on the edge of being spam/promotional.