Pretty sure they stand for Friendly Local Game Store and OnLine Game Store respectively.
Yes, that is correct.
If you check with Cool Stuff Inc. (http://www.coolstuffinc.com) or Miniature Market (http://www.miniaturemarket.com) they will have pretty competitive prices that let you see about what each game sells for online. Then you can compare that to Amazon and decide if it is a good Amazon price or not.
Also if you don't know about: http://camelcamelcamel.com
It is a site that tracks amazon prices.
You can mark items you are interested in and the site will alert you through email if/when the price drops below a price threshold you set.
i.e. Alert me if Castles of Burgundy drops below $25. Then you sit back and wait for an alert.