That tablet is pretty...meh. It'll be slow. Its likely fine for web browsing and book reading, but don't plan on downloading too many high-end games, that thing will be pretty slow trying to do anything graphic-intensive. I've never heard of that site, but the fact that there is no mention of a manufacturer for that tablet isn't a good thing.
Half a gig of ram is the real kicker there, I haven't seen any halfway decent tablets with less than 1GB of RAM in a couple years now. My Nexus 7 from 2012 has 1 GB, and its even starting to get a little long in the tooth nowadays. The battery is pretty small for a 7" tablet, much less a 9", and I see no mention of screen resolution(also a bad sign)