These products were just test products to see if vendor part worked. They weren't meant to be real.
If that's the case, making it clear for the visitor would be better. If you don't do that they'd just assume that your price is way too high compared to other marketplaces. At least the product name helps for now, but adding more info would be better imo.
Also, when will your company/website start its business? If this testing phase lasts long, why not do a review campaign? That should give enough incentive for people to try your marketplace. Right now, I see no reason to register because the website itself is not ready. You can start more marketing after you do that.