Most prices depend on the quality of the safe, the lock and whether or not you want to get a fire proof safe. I would recommend checking out the Stack-On brand, they have a lot to offer, for decent prices in most cases. The best idea is to look in your local ads and check them out first hand. Gander (that is right I said it) has an excellent selection on hand. You should shop around to see if you can find a price...and if you do, see if Gander will match that price if that is more convenient distance wise.
For the inside door pistol holders, you can get quite a few products online, for instance: http://www.deansafe.com/gun-safe-accessories.html
Good luck deciding what you want.