Understood
You could always do like me and wait until episodes 3 and 4 reach IndieGameStand or the other indie bundles. Only then shall I play the game.
As I said above, there's a (relatively) significant price disparity: the 3 + 4 upgrade is $11.25 on the official site but the Season Pass on Steam is discounted by 75% if you own the first two episodes, knocking it down to $7.49. You can't buy the latter at the moment, as noted earlier, but assuming the discount isn't a mistake, it'd be worth waiting for the sub to be fixed.
Waiiiiit.... is this the same train simulator that has like $100+ worth of DLC/trains to buy?
$2865.90 worth of DLC, to be precise!