If anyone is looking for a good deal on Checkmate contract USGI mags, this is about as cheap as I've found them for in awhile. Purchase over $25 worth and use coupon code PERFECTDAY (before 9:00 p.m. PST) and you'll receive an extra 15% off. Using the coupon code I was able to purchase three mags for $9.56 each.
https://m.ebay.com/itm/1911-G-I-Magazine-45-AUTO-7-ROUND-NEW-IN-WRAP-BLUE-FITS-COLT-KIMBER-ETC/362351161853?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=53041&meid=07161ffc096a416c996bb8976aee4007&pid=100675&rk=1&rkt=15&sd=362351161853&itm=362351161853&_trksid=p2481888.c100675.m4236&_trkparms=pageci:cc1e01bc-7c01-11e8-84fe-74dbd18039c1|parentrq:4e39f9501640aad90fd8dc65fff56c53|iid:1
https://m.ebay.com/itm/1911-G-I-Magazine-45-AUTO-7-ROUND-NEW-IN-WRAP-BLUE-FITS-COLT-KIMBER-ETC/362351161853?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=53041&meid=07161ffc096a416c996bb8976aee4007&pid=100675&rk=1&rkt=15&sd=362351161853&itm=362351161853&_trksid=p2481888.c100675.m4236&_trkparms=pageci:cc1e01bc-7c01-11e8-84fe-74dbd18039c1|parentrq:4e39f9501640aad90fd8dc65fff56c53|iid:1