I just saw this from several people online and verified at the HashFlare site. Hashflare silently updated the price of their SHA-256 Bitcoin mining contracts from $1.50 per 10GH/s to $2.20 per 10GH/s.
From what I can tell by checking their social media accounts and official website they have not made a formal announcement. The only indication their has been a change other than the increased rate is the addition of the words "Limited Stock" on their pricing page.
(New pricing)
Anyone who is about to buy (or reinvest) should rerun their numbers to see if it is still worth it to you.