In your settings add an additional formula for the AMAZON.COM or AMAZON.CO.UK


abs(((((vendor_price-48.995)+abs((vendor_price-48.995)))/2)/(vendor_price-48.995)-1))*6


This formula ll place an additional charge of 6  if the price is less than 35


You can edit and replace the 6 with what ever you want to add for shipping cost


For UK users .you need to edit the formula and change the formula with the UK settings


abs(((((vendor_price-19.995)+abs((vendor_price-19.995)))/2)/(vendor_price-19.995)-1))*6


replace the 6 with the shipping cost you want


If you try to use it on other suppliers DO NOT put in formula the exact amount of free shipping