Tennis rackets

[amish]

I am planning to play tennis (never ever played).However I do not want to buy expensive rackets, because I do not know how long will I be playing. Also max I will play is 2 days a month.So I am interested in knowing shops where I wud get rackets which will last good but will not cost much.Is there any cheap but good shop in Mumbai?Minimum quote I got is 800Rs but that was good well decorated A/C shop, so I am sure there wud be shop where I shud be able to get the racket of same quality for around 600Rs.I am planning to buy 2 rackets.Also is there a way to know which racket is good and which bad?Thanks in advance.