I’ve been writing about rising valuations for a while now. But this week, I saw a deal that was so crazily priced, I just have to write about it again. This young San Francisco-based startup had about $700k in annual recurring revenue (ARR). It was a B2B Software-as-a-Service (SaaS) product — limiting it to basically just a handful of customers. The valuation on the deal was $72 million post-money!…