Ringside tickets for the welterweight unification clash between Floyd Mayweather and Manny Pacquaio are fetching upwards of €115,000 online after official outlets sold out within minutes on Thursday night.

Around 500 tickets went on sale to the general public on Thursday with the majority of seats in the 16,500-seater MGM Grand already allocated to the hotel, Mayweather Promotions and Top Rank, who promote Pacquiao.

Five price categories ranging from €1,390 to €6,960 were offered at face value but by Friday morning prices were varying from €5,429 to €115,000 on secondary seller StubHub.

The May 2 bout is one of the most anticipated in boxing history with the WBO, WBA and WBC titles all on the line.

There were fears the fight was under threat due to a stand-off over ticketing but the brinkmanship came to an end on Wednesday evening when the contracts between the hotel and the promotional companies representing Mayweather and Pacquiao were signed.

Overall revenue from ticket sales is expected to scale €70million, breaking the previous record by three times and elevating the size and location of the rival camps' allocations at the MGM Grand's Garden Arena into a key area of negotiation.

Further money will be raised from closed-circuit broadcasts of the fight at MGM properties, with up to 50,000 tickets being made available at €139.