1- total = retail_rate(rates)
 2- cost = body[:items].map { |item| item[:quantity] * item[:value] }.sum
 3.half.shipping
 4	span Shipping
 5	span
 6		= rates.first["postage_type"]
 7		'
 8		strong= "$#{'%.2f' % total}"
 9		'
10		= rates.first["delivery_days"]
11		'  days
12
13.half
14  span Total
15  strong= "$#{'%.2f' % (cost + total)}"
16
17input type="hidden" name="amount" value=(cost + total)