BitValve P2P Exchange allows you to buy ethereum and pay with Western Union transfer! Go through the listings above, and find a Trader who wants to sell you ethereum. Keep in mind that you need to check if the currency and the country of the Seller is appropriate for you. For example, if you want to buy Ethereum with Western Union with EUROS, then you need to find someone who is accepting euros as currency for his Western Union transfer. Once you find someone to buy ethereum, simply start the trade, wait for the Ethereum escrow to confirm and then you can initiate the Western Union transaction. Then you need to mark the Trade as