Social media accounts valuation

Hi guys, I am calling all social media specialist for some help in regards valuing facebook and twitter account(s). To cut a long story short, I received an invitation to participate in a private auction for two social media accounts - FB account with circa 180k users and Twitter 3k users. Those accounts were owned by a recently bankrupted/defunct company. Do you have any idea what's the good price for a social account with active users ? Thnx