I dont know why you never get your miners. I have just received the order of 30X10s paid with BTC annd got the order in time.
I have bought over 100K miners from acisminermarket during last 1.5 years, never had any issue with them, also I can confirm that I got 100% brand new miners from them. How can I be sure that these miners are brand new because I have 52 x10s from 1st and 2nd batch I can tell weather miner is brand new or used.