Seventy mm is selling products without having products in stock ( but shows in stock while booking orders) in fact they use money by accepting advance payment from the customers. They are purely a cheat people.
They give false assurance to the customers about delivery of products and later shows their inability to supply the product ( after a gap of 10 to 15 days) even their refund period takes a long time (as per them it takes about 7 days )thus one can say that they use funds of customer rather than making their own investment to run the shopping site,
So customers beware of such cheat sites dont waste your time and money by going with seventymm