WTB 1 just ONE Kingman Training Chaser/Eraser spare mag..

so i found a refurbished kingman chaser for $50, and i should have it in about a week, i've read 99% positive reviews, and the one recommendation is to get a spare mag or two, but really i just dont want to spend $30-$45 on a twin pack.. so if anyone has a spare one theyd be willing to part with for $10 hit me up