I don't have any information to share about this site, but in taking a quick look it seems like a truly terrible place from the artists' point of view. 400 vectors for $19; 134 word press templates for $34 and so on. All about overstuffed bundles of low quality stuff at very low prices.
I didn't look at any of the terms and conditions, but with those sorts of prices, even if you kept 100% of the sale price you'd be getting a bad deal.
If you do decide to give it a try, take a look at the contents of some of the bundles to be sure they aren't collections of other people's artwork - a number of these bundle-happy sites are a home for thieves (like Fiverr) and you wouldn't want to be part of something like that.