Tapari, located in C-Scheme is one of the best place to hangout with friends. The best part is the view of the entire Central park from there and Jaipurs tallest and biggest INDIAN FLAG works as an ice on the cake. I have visited Tapari for 2-3 times only(I have recently started going there). seriously the experience is really good. You feel fresh there. In menu you will get all types of Chai(Almost 100 varieties), Snacks.etc.
But Yes, the bill will might get you depressed, because it is too costly. I must say the price is the only markdown for this place if I look from a customers perspective.
I can only say that a must visit place in jaipur at least one time.
Note: I have been there with two of my friends, and it cost us around 2100/- for breakfast.