Find the complete thread on reddit:
https://www.reddit.com/r/xyMarket/comments/7k71zi/windows_10_pro_product_key/?st=jb9e81n1&sh=968f2ff2
In short: Windows 10 PRO product key for $25 - Buy using BTC/LTC/ETH.
https://www.reddit.com/r/xyMarket/comments/7k71zi/windows_10_pro_product_key/?st=jb9e81n1&sh=968f2ff2
In short: Windows 10 PRO product key for $25 - Buy using BTC/LTC/ETH.
You should have move your topic to Digital Goods it might have a high chance that some users would be interested with you product key.
Some users before have already selling same products as yours, and they have sold after making a voucher maybe you perhaps want to vouch 1 or 2 person with your product so other users will be sure that you are not going to install anything other than intended to be.