Is it odd the first colony edition is cheaper than the season pass? I'm tempted to get the green expansion but the pricing is strange. And theres no upgrade from standard to first pioneer either. Seems a waste to buy the whole game again but it seems like a good deal. I hope I'm not missing something

I agree.

The First Colony edition was cheaper than both Green Planet and Season Pass. I had the standard version and just bought the First Colony edition. It was the best deal for me.

Edit: I see the price is back to normal now.

That's what people usually call a "sale", you know, a promotion that reduces the price of something. :-p
Sale for First Colony was much bigger percentage (66% IIRC) so yeah, it ended up being cheaper.

Reading this makes me even more happy I bought it during that sale. :P