Consider the cost of a match box type flat in Mumbai think about a palatial residence amidst natural set up for the same price. Overlooking the river your residence is an abode in heaven. In short, that's more for less.
Look at it as an investment. In Mumbai, real estate price is crashing let alone appreciating. On the contrary, Malavali is attracting more and more affluent people, taking the real estate prices sky high. An investment today at Malavali will pay rich dividends in near future. In addition to that "Super express highway coming up soon, touching the complex, would multiply money heavily."