I love Massdrop, and I am a regular customer here, but I'm obliged to point out that you can these cheaper than the best drop price on BuySonic if you are in USA : https://www.buysonic.com/products/beyerdynamic-custom-one-pro/
$162 with shipping to the US.
Aug 19, 2014
AFus
Aug 20, 2014
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WinstonWoofI discovered Buysonic a few weeks back and they are aggressively competing with Massdrop on a few different headphones presently. They are offering some really good deals, are an authorized dealer, and there is no need to wait weeks for shipment.
$162 with shipping to the US.