This is not a right place to sell your Antminer cause I think nobody will care about it in here. Try to move your topic to Goods section I think it's right place for this topic
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https://bitcointalk.org/index.php?board=51.0This is a bad advice, because this is just in the right area actually.
Miner sales threads belong to this area:
Bitcoin forum -> Economy -> Marketplace -> Goods -> Computer hardware.