This could of worked ... but, you have mixed your commas, semi-colons and colons in correctly:
Then, you are repeating the same price vs just set the prices at the price breaks:0.5:90.00, 1:90.00, 1.5:90.00, 2:90.00, 2,5:150.00, 3:150.00, 3.5:150.00, 4:220.00, 4.5:220.00, 5:300.00, 5.5:300,00, 6:360.00, 6.5:360.00, 7:430.00, 7.5:430.00, 8;480.00, 8.5;480.00, 9:520.00, 9.5:520.00, 10:550.00
2:90.00, 3.5:150.00, 4.5:220.00, 5.5:300.00, 6.5:360.00, 7.5:430.00, 8.5:480.00, 9.5:520.00, 10:550.00



