Save money in the recession by shopping around for sex

I'm congratulating myself on managing to have sex only once in July, resulting in an under-budget month that only cost me £120 (and I don't regret that hour with Anna - a 40ish real woman and complete sweetheart who seriously knows how to fuck). Now Barbara who I saw briefly last month (train delays adding to my frustrations) is offering an hour for £50, and she's a sweetheart as well. Of course the temptation is to have more sex rather than save money, so we'll have to see how this month goes.