I have four non-USGI M14 / M1A magazines for sale or trade. These are in very good condition as you can tell from the picture.
Price is $45 shipped. Payment expected by Paypal.
I would trade them for AR15 magazines (quantity dependent on condition and make), a IWB J-Frame holster, or a OWB 5" 1911 holster with some cash involved depending on the traded item.