For me it's the frozen food in my large freezer. Over $500.That and we have no water without power as we have a well. I only run the genny about 8 hours a day at two 4 hour intervals and that keeps the freezer in the low 20's at the highest. having electric to charge the phones and run the PC and get on the net is a bonus especially since my wife works from home.
I'm going to remove comments & lock this, sorry @45Doll. It's getting (predictably and understandably) political. There's another thread on this in the 1A Lounge started even earlier (if folks want to comment further).
Meanwhile, your original post will remain here so that more readers are aware of the issue.