It’s not too expensive. I don’t remember any webpages, but we had to buy international health insurance for my husband so he could get a transit visa in France. (He’s from a country that has a visa waiver to nowhere.) You have to purchase the insurance before you leave your home country. There are several options, but $1000 deductable wasn’t a bad price, if I remember. If you want to include coverage in the US, it will cost you a lot more, but if you are from the US travelling elsewhere, it’s pretty reasonable.

Do a search on google. I think we went with TFG, but there were several options. We did it twice, in fact.