That $80 dollars includes more then just the rules. You will also get a huge pile of counters in the Revised Box Set, that allows you to pretty much open the box and start playing. I do agree though that the statement about everything you need to play in 1 box can be read in many ways.
Yes, the counters were a nice thing, for the ability to test fleets before I bought minis. For $50, it'd D@** well better have those counters! However, I was operating under the assumption that Mongoose wanted me to buy the minis as well, and frankly, I was intending to do that. However, with a buy in cost of over $100 before you get to the minis is steep.
What I find infuriating is the deceptiveness of it. The online store specifically says "REVISED EDITION: The revised box set brings A Call to Arms up to date with all the rules changes featured in the Sky Full of Stars supplement" When it says ALL the rules changes, I took that to mean ALL the rules changes.
Now I'm not saying that Mongoose intentionally decieved me, but I still feel like I was in fact decieved. I was expecting to crack open the box and play against some of the locals here. But if I do that, they'll have rules adjustments from SFOS and Armageddon. So yes, while I could play straight out of the box without any suppliments, I would have to play basically myself, because everyone else will be playing with a different set of rules.
I think that Mongoose should state up front that a person does need to get all the rules to play. I have no problem paying for expanded/new fleets. But the core rules shouldn't have such a buy in. If they want to change the rules, that's fine, then make those free online. But to spread out core rules and fairly important changes to the base mechanic across 3 books smacks of old school TSR. To not be up front about it and say that I'll need to buy $100 of rules makes me not want to give Mongoose another dime of my money.