In my experience Google shopping is inclusive of shipping if they know about it, but there's a big data hygiene problem, so you have to verify their results. I find it useful even though it's imperfect.

lol sounds like ebay. Buy a card for $1. They want $35 for shipping. Arrives in an envelope with a $2 stamp.

Ebay explicitly allows you to sort by price + shipping. I don't think they even have a sort by price only option.

Don’t forget the cost of handling!!!!

/s (mostly)