what is price of first class postage?
A First Class stamp for a letter weighing up to and including 100g costs 76p, while for a large letter of the same weight, it is £1.15 First Class stamps for large letters of up to 250g are priced at £1.50. For a weight of 500g it costs £1.97 and £2.72 for large letters weighing up to 750g.