It’s in past posts of mine, shouldn’t be hard to find. That is of course once you are all caught up, so cost per expansion, I’m not crafting past cards. You’ll still have to throw money at the wall if you want everything, but you don’t need to have everything, and it would be even less than 94c… I enjoy not being in a box of what I can play…
Edit:
I had time to find and share the post of my method…