I've worked for a week or so for a US based crypto news site, but because of the time zones, we eventually split up. Got paid $50 for writing these 3 articles. I've been in crypto space for over 5 years no. Have knowledge of how Blockchain works (ins-and-outs).
As for the price per word, I got paid $40 for these 3 (google docs) articles (0.23c per word). You can also read my other ones, which are more technical on SteemIt: https://steemit.com/@robust-crypto