http://www.quora.com/Robert-Frost-Quora-user/What-are-Robert...
http://www.quora.com/Robert-Frost-Quora-user/What-are-Robert...
The actual answer may have something to do with the fact that India did not spend a lot of money on R&D specifically for the Mars mission. They are leveraging existing technologies and knowledge from earlier missions (including some from NASA and ESA).
The fact is this concept called 'frugal engineering' or commonly called in Hindi as 'Jugaad'. Its a little unfair to call is 'frugal engineering', this is more on the lines of 'Do what it takes, with whatever little you have, to go where ever you want to go'.
Its really more like a cultural thing here. After centuries of invasions, foreign rule and desperation the idea is to see some success at any cost. You try to beat the odds any way you can.