.38 super nickel plated brass, .32 qcp ammo

Hi, I have 3100 brass of .38 super brand new from magtech. Its nickel plated on their website new its 269.99 per box of 1000. The .32 I have 300 rounds for sellior a bellot theyre 17-18 a box of 50 from what iv seen. I'm asking 75 for all of the .32, the .38 I feel like its a fair price at $350, or for $400 take it all. May take trades. May take offers, no trying to get completely screwed though, before taxes and shipping for the brass and ammo it would have been around 900. my numbers 765-338-6512 sorry I ment acp in the title.

Can anyone educate me as to the difference and or advantages? Looks like nickel plated brass costs more, but whats the advantage to it?