Hello @Gary365,
I also didn't want to set my price for one with an extra person charge as I didn't want to have the guest see a price increase when they entered the number of people as two.
I rent a double room in the house in which I live and set my base price of €40 for 2 people as 88% of my stays have been for two people and I still have to do the same amount of cleaning, washing & ironing for two as for 1. €40 does make it a little expensive for single travellers but only one such traveller out of 46 has marked me down on value.
It depends on your market. If you're happy, as a 1 person listing, with the number of reservations you get then that's all that counts.
Steve.