tickets for the fight in las vegas go on sale on thursday night .
around 1000 tickets will be on sale priced between $ 1,500 and 7,500 each .
the mgm grand has a capacity of 16,500 but most of the tickets will be split between mayweather and pacquiao 's camps and the tv broadcasters .
up to 50,000 tickets for closed-circuit viewing will also be on sale .
jeff powell : mayweather 's now the mature man who weighs words carefully .