1-8 ounces = $14.25

9-32 ounces = $24.00

33-48 ounces - 37.50

49-64 ounces - $61.00

So, 64 ounces = 4 pounds - 1.81 kilos = $61 for the shipping.

4 pounds is the maximum weight allowed for this class of shipping.

NB: An 'average' book weighs 1.5-2 pounds (.68-.9 kilos).

I can easily weigh the book or books before you decide whether or not to purchase.