MASS may be cheap to mine but at current price its best to buy MASS from exchanges rather then wasting your time in mining MASS. See rate of MASS for instance, its $0.03512 today and you cant expect that from mining. Its a thing good for future investment not for short term, keep this thing in your mind while investing in MASS.
I think what you said is also true because buying MASS at a very cheap price at this time will be more profitable than mining and waiting a long time to collect before selling everything into the market because mining takes a lot of time, while buying only takes time to upgrade price in the market.