I did an internet search before buying my American, and came up with a low price of $289, second lowest from my part of the country was $309. To that price, you add shipping, whatever the local FFL holder charges to receive the rifle, and probably a charge for them doing the government paperwork.
One of the internet gun sellers has a locator service on the website where you put in your zip code and get the nearest FFL holders and what they charge to receive the rifle for you. I found one that charges $10, plus an additional $9 for the paperwork. I contacted the local dealer and he said he could beat the prices I found by ordering as a dealer. I paid him $330 for the American which included shipping, his charge and the paperwork.
I might have got it for less, but the Americans I saw on gunshop racks here were going for $399, so I saved a few bucks. The other good thing was if the rifle was damaged somehow in shipment, the local dealer would have returned it for another at no extra charge.