Monthly rates and eletric meters

Ever wonder how many kilowatt hours you use in an RV at a campsite?  At the KOA in Wilmington they charge for the site (monthly) and now charge for electric separate. 11 cents per kilowatt hour.
I did research but really couldn't find much on it. Plenty on homes but not much on RV's. The general information I found shows the average home uses 1 kilowat per hour.

We have 30amp service for our RV. One A/C (which is constantly running right now), 2 computers, external montior (always on), frig and our TV (42") is generally on during the evening for 3-4 hours.

Keeping track it looks like we use about 2.5 kilowatt hours a day. That's 77.5 hours per month or $8.26 per month in electricity. Not bad!

In October I'll update with the actual numbers.

Update:
First full week (9/16 - 9/23) of electric with A/C running about 8 hours a day and Frig on A/C -
Started 7.1 kwh  Ended 26.1
Total 18.8 kwh * .11 = $2.068 cost first week