That price is totally worth it though. I'm finishing up a first version of my own (native) C++ 2D engine. It runs smooth on iOS and Android, PC and I'm going to get it running on Bada, WebOS and Mac OS as well. The time it took me to get this up and running is around 1000ish hours, and I'm pretty experienced in the area. Going to put in 3D as well soon. :)
I'll be adding lua as a scripting language, but it probably won't be in v1.
That said, I don't really want to take the same direction that unity is currently taking. Since the engine that I wrote currently pretty much works on every mobile platform, I'm aiming to sell source code licenses to game companies.
It may be $7/mo, but you only get 5 private repos and one collaborator. If you want more than a small handful of private projects, or even want to work on a private project with another person you need to cough up $12/mo, which is infeasable for just a hobby project or two.
BitBucket, on the other hand, gives you unlimited public and private repositories and 5 collaborators for /free/.
For a business, $25/mo isn't much, but for personal projects i prefer free over paid.
Are you kidding me?; for private stuff I use a shared hosting service with shell access for $35 a year, unlimited repos and contributors. And I even host a well visited wiki on that server.
Anything else that involves other people and is private is somewhat of ant oxymoron. And for OSS like stuff there are more than enough services on github in the free plan.
Even if $7-12/mo is peanuts to you (it definetly isn't to me), it's still $ vs free. And even comparing bitbucket's free plan vs github's $12 plan, bitbucket's /still/ provides more value.
As for if github is so much better as to be worth the extra money is an entirely different flamew..discussion.
The best way to pick a framework is the same as the best way to pick anything-- make a simple app like a blog or a forum with both frameworks and decide from there which one you like better.
It's pretty expensive, but given how well that demo worked i'd probably buy it if i did any javascript.