The experience of buying devices and GPUs from Pre-Orders is a lot, maybe you can see below, but not from the akminer.com site that you publish here.

Topic: [Batch 4 Pre-Order!] FutureBit Moonlander 2 Official Order Thread
Topic: A4 Dominator - Pre-Order Group Buy - 280mh, roughly 1000w, $1800 + shipping

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If you ask about the experience of buying a device on the akminer.com site, yes, I've seen someone ask like you asked.


But I can't find the answer in detail, but it seems that someone bought on the site you gave, it's old 2017, but no further response about it.

Take a look here: https://bitcointalk.org/index.php?topic=5304803.msg55975903#msg55975903