Hey there! Out of all the engines you chose, plan on building it from the ground up to do it right the 1st time. Most of these engines are very old and "rarely" do you see a S13 Sr20det, Rb25, RB26 in mint condition.
Be very careful where you are getting your engines from. Having "good Compression" and shining up your engine doesn't mean jack when your bearings are shot.

The last Tsunami destroyed a lot of cars so try to get your engine directly from Australia, Canada or right here in the good ole USA.
There really isn't a "Price List" for each swap. You have to get into the swap.
Going RB?? Plan on eating Roman Noodles and Peanut Butter for awhile.
Sr20, LS1, KA are probably your best options as far as reliability and cost. Do some more research before you get into the project.
Remember these 3 because you only can have 2.
Reliable, Fast, Cheap.