Hi,
I seriously doubt if you will be able to buy Nokia 5130 with Vat Invoice and 1 Year Nokia warranty from any retail store for rs.5000/-
Please check again the peice would be from grey market / parallel import. Many a time grey market peices are refurbished or stolen goods. Many of the genuine accesoies are replaced with duplicate batteries chargers, earphones, etc. which give the retailler some margin to play with.
Having said the above, ebay fees + paisapay fees are too high for a mobile seller to compete with offline prices where margins are typically 1% - 2% and many a times the Credit Card commision being passed on the buyers.
I have pulled down my entire inventory of Nokia mobiles as it does not make much sense to sell branded phones on ebay.in
Regards,
Paresh