JMDR Arihant Green's high price: worth the completed status?

Since I work in real estate, I see right through the super area vs carpet area games. Arihant Green is OC toh sahi hai, but is it *really* worth almost 5cr? Jaypee Augusta Town Home is ready too, plus it's Jaypee. Has anyone compared the actual usable space in both? Should I ignore builder reputation and just go with carpet area?