ShopFiller is an extension for Google Chrome that allows you to easily find free shipping on Amazon. With ShopFiller, you can search for the items you want to buy, get the Amazon shipping code, and place an order with no additional costs. This means that you won't be paying for the shipping, it will be free.

There are a few things to consider when using ShopFiller. If you are in the US, you should enter your address in the country format; if you are in Canada, enter your address in the province or state format; if you are in the United Kingdom, your address in the city or region format; if you are in France, your address in the area code format; if you are in Italy, your address in the area code and the full street name format; and if you are in Germany, your address in the city and the street name.

You can also enter an amount that you want to pay for your order, if the item you want to buy costs more than this amount. Note that the item may not be eligible for free shipping.

If you are in the UK, ShopFiller supports free shipping on items that are eligible for it. The eligibility criteria are given on the website for each country, so please take a look at the website of the country you live in.

You can change the country in which you live if you want.