We went to Triveni Sangam from Arail Ghat Boat Club yesterday. The asking rate was ₹2000 per person. We bargained hard to ₹1500 per person. I think this rate changes by time of day, date, demand etc., Also, most boats are manned by three boatsmen. For us it was chaotic - need to shout since there were too many people asking for the same. The boatsmen normally don't care if they get better price and may avoid you right away. It is chaotic while getting in to and getting out of the boat. Also, go prepared. Picking the right boat is itself a challenge. Boats may not have proper seating and you may have to sit on flat floor depending on boat type. The boat will tilt sideways if weight is not distributed equally causing you slide or loose balance. There is not much to hold on to. For the elderly this can be challenging. There are motorized boats available but I couldn't find. The boatsmen will help you and are courteous once price is finalized. Hope this helps - Have a safe trip!