Coinbase is in buyout talks with Earn.com, with a potential acquisition price of around $30 million, Coindesk reports. The publication, citing sources close to the situation, says that figure would be on the low end of estimates, given the five-year-old startup has raised more than $225 million to date from various venture capital firms. Earn.com rebranded itself last year, shifting away from the name 21.co and focusing on its eponymous paid messaging platform, Coindesk says. Read more here.