I really couldn't tell you other than I got an excellent deal on here. Somebody was selling 5 gauges, 223, 9mm, 45acp from egw. The other two were shockbottle 9mm and 40. for 300 bucks plus shipping.How much was that 50 round case gauge? I use a 100 round one from Shockbottle. I do use EGW for 223
https://www.ebay.com/sch/i.html?_nkw=shockbottle+45&norover=1&mkevt=1&mkrid=711-34000-13078-0&mkcid=2&keyword=shockbottle+45&crlp=_&MT_ID=&geo_id=&rlsatarget=kwd-77103310683485:loc-190&adpos=&device=c&mktype=&loc=45948&poi=&abcId=&cmpgn=301084832&sitelnk=&adgroupid=1233652106764680&network=o&matchtype=b&msclkid=05f50158353d1884b858617a9f2cb82c&ul_noapp=true
Mid last year I bought the 223 from egw for 200 bucks alone! So it was an excellent deal. Looks like that 45acp gauge is 100 bucks off their website (not in stock).
https://www.egwguns.com/case-gauge-ammo-checker-45-acp-50-hole