Savage makes some nice bolt action rifles, and several are very accurate.
If you are target shooting, 308 is a far better round. But over 200 yards I much prefer a 300 Winchester Magnum.
If you are hunting, 30-06 or 308 are both better at 300 yards.
The 270 is a fine cartridge, I own a nice Winchester Model 70 chambered in 270. It is fine for deer sized game at 300 yards, provided you are a really good shot. It just does not have the extra margin in power that the 308 and 30-06 have.
There's not enough difference in the cost of ammunition to justify getting the 270 over either of the others. I have one because I like it, and it is enough for shorter ranges on deer. If you're shooting enough to worry about ammunition costs, and you care that much about accuracy, get a good single stage reloading kit such as an RCBS RockChucker Supreme. Almost every serious shooter I know loads his own.
Around here Walmart has good Federal blue box for around $13 or so a box for 270, 308, 30-06, and several other common non magnum chamberings. Never seen it higher than $18 a box, and they have a 6 box limit.
To find guns at reasonable prices, go to Davidson's Gallery of Guns, and use the Gun Genie.