My first experience with the series was FO3 and I loved it, but wasn't so keen on NV.  Played Skyrim to death too.  Looking forward to FO4 in a big way, even though it's probably going to be like the Borderlands series - more of the same dressed in better / different clothes.  Even so, I'm excited.  My wife will roll her eyes and settle in for another month of loneliness as I disappear into another enthralling game.

You can buy Steam games cheaper via the G2A store (digital only - pay your money, get a Steam game key) but if you don't like it, Steam's money back guarantee won't apply.  I've purchased several games this way with no problems, new titles often 30% cheaper than the Steam store.  FO3 GOTY is $25 on Steam but $12 on G2A.  FO4 is $100 on Steam and $85 on G2A.
Before G2A I'd get my friends in the US to gift me a game and them paypal it back to them.  I've asked Steam why their games are so expensive in NZ and their standard reply was 'prices are set for each market'  which I guess means they are pricing around brick-and-mortar stores.  By choice (they make more money) or by legislation / trade agreements I'm not sure.  All my software is digital now, I haven't bought a software disk for a loooooooong time and none of my friends do either so this 'protectionism' (if that's what it is) seems rather pointless.