It looks like it's no longer online. FigBid is still active. Both sites were owned and operated by the same person/people. BidNGrow was an offshoot of FigBid. I guess it's just been merged back into FigBid.
I liked BidNGrow, in theory. But, I did a few listings on the site with no sales and generally found other sellers' inventory fairly limited. I wish it had succeeded as an alternative to eBay.