I want to go for prince concert and looking for discount on prince concert tickets, suggest me any good source for my need..

Most sources (ticketmaster, the venue, etc.) will be selling them for face value, with discounts for multiple tickets.

Try eBay or Craigslist for tickets at less than the face value.

Otherwise, you can take a chance by going to the venue in your area and looking for people standing outside selling unwanted tickets.

What venue and date are you looking for?