Huh... pretty sure the math is sound. After selling the ammo for ITS full price you literally only pay $170 for the gun. The ONLY time this doesnt make sense is for a person who NEVER intended or needed or wanted to buy the ammo at all (and im sure there are some). Some of us actually DID want the ammo and DID get the gun for only an additional $170. However, IF you sell the ammo for full price (which you should have no trouble doing) AND you sell the gun for $250 (which would be easy, ive sold two for that much) you STILL LITERALLY have only $178 in the gun so youll make about $75. There is no right, wrong or indifferent about it... thats what you paid. The ammo was on the site before this particular gun was... therefore the value of the gun must be based on the pre-existing value of the ammo.
if the gun was on the site FIRST (or any other site for that matter), and they ADDED the ammo for a package deal youd base the value of the ammo on the difference between the original price of the gun only and the total price of the package.
I was doing this kind of math in grade 3... by grade 5 I was doing the kind of math necessary to buy 3 package deals, sell 2 guns for $250 and 1000rnds of ammo for $400... when I am rid of the 2nd crate of 1000 rnds I will have sold $1300 in goods meaning MY pistol AND ammo package only cost ME $275... therefore, I got 1000rnds of ammo for $275 and a free 1911, or I got a package deal for $275... however you want to look at it, I still only have $275 in the gun and the ammo.