1: It's free, but you get more access if you pay $10 a month. There's little point unless you want to own land.
2: It's not an actual game. It's just a virtual world. It's about having a virtual world to do stuff in.
3: It's the first and best of its kind. No other virtual world lets you have anywhere near as much control. However, unless you have a high end computer, it's rather laggy.
If your internet connection is at least 50K, you'll be able to do most things in SL. Don't expect to do any fighting unless you can get it over 100K. You'll still see some lag and have a few things taking forever to load unless you can get it up to the GB range, but that will mostly be textures and other non-critical items.
If you can connect at all, you can do things in which lag is not relevant - such as attending a radio broadcast from inside SL, going to meetings and classes, hanging out in clubs, non-combat roleplay, etc.
I'm not trying to advertise for it, but all the vendors I've seen sell DCS for 75L$... the only bother is having to update it since vendors only seem to sell DCS2 and I'm pretty sure the latest version is 2.461.
2: It's not an actual game. It's just a virtual world. It's about having a virtual world to do stuff in.
3: It's the first and best of its kind. No other virtual world lets you have anywhere near as much control. However, unless you have a high end computer, it's rather laggy.
1. That's good.
2. Sounds sort of fun, but that type of thing doesn't always appeal to me the most.
3. I have good hardware, but my internet connection is laggy.
If you can connect at all, you can do things in which lag is not relevant - such as attending a radio broadcast from inside SL, going to meetings and classes, hanging out in clubs, non-combat roleplay, etc.