Ah they're finally selling these... nice. I think it's a good idea, especially for clones (not going to really delve into why I think so, but let's just say ones I have dealt with in the past have had problems in this area.)
As for the $80 pricetag... I think it's a bit steep. It does say torque up gears, but what If I wanted to put in my own helical gears or something, then I'm spending extra money for the useless gears. Not saying that these are bad, since obviously I haven't used them, but you must acknowledge peoples preferences.
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