Three things: how many markets it offers per match, how tight its prices are on the match winner, and how easily you can move rupees in and out. A fourth, for live bettors, is how quickly in-play prices update between balls.
Parimatch led our test with more than 180 markets on a single IPL fixture: toss, top batter and bowler per team, highest opening partnership, innings runs, fall-of-first-wicket runs, individual batter and bowler lines, most sixes, man of the match, method of first dismissal, and over-by-over totals in play. 1xBet was close behind and adds batter milestone markets (to score 30+, 50+). 1win and Melbet offered 120 to 150, which is plenty for most bettors.
On IPL match winner, 1xBet had the tightest margin at 3.9%, Parimatch 4.1%, Melbet 4.4%, 1win 4.8%, Mostbet 5.0%, BC.Game 5.2%. The gap between the top and bottom of that list is worth roughly ₹13 on every ₹1,000 bet.
Parimatch, 1xBet, 1win, Melbet, 22Bet and Mostbet all take UPI, PhonePe and Paytm with instant crediting. For withdrawals, 1win was quickest at around four hours; Parimatch and Mostbet took most of a day. Stake and BC.Game are crypto-only in India.
Rights restrictions mean IPL itself is rarely streamed at any of these sites; use the official broadcaster and bet alongside.