Dropbox buys HelloSign (YC W11) for $230M
I don't mean to ask this ironically; how do these companies come up with these numbers during a sale?  Jet.com was sold for  $3 Billion, but Craftsman Tools was sold for only $900 Million.<p>I don't really know anything about HelloSign, but can someone tell me roughly why they might have come up with the $230M number?