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Youre almost guaranteed to avoid the commander tax if you play your creatures right
Its weakness is that it can be negate in Urara, and since it is an effect that activates in the GY (exclusion zone), it is also worth noting that it will be caught in his GY meta such as Called by the Grave
The lone Abrade is the only way to kill an artifact in the whole deck, but because you aren't nearly as vulnerable to a card like Unlicensed Hearse that's not much of an issue
eBays trading card fee is higher at 13.25% up to $7,500, but eBay brings stronger search traffic and better long-term listing value
Of course, the answer to this one will vary dramatically depending on the deck and other variables, but heres something important to bear in mind: raw ATK numbers arent everything, nor is a fearsome monster design