While these things may not actually be for sale, here is a small sampling of things that cost less than Facebook’s $19-billion (total of $16-billion cash / stock + $3-billion in employee retention) acquisition of WhatsApp. For example, the Large Hadron Collider had an initial budget of 7.5 billion euros (approx. $9bn or £6.19bn as of Jun 2010), and is one of the most expensive scientific instruments ever built. Continue reading for more.