B-Stock don't nessesarely mean there is any fault or have been any, it's also the 30 days money back guarantee.
Box been opened = B-Stock some say.
So if you buy and regret the deal, send back a good as new intstrument, you mean noone should buy it to save some money?
After all there is 30 days for the next byer as well.
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)