Selling Multiple Local Music Lesson Sites

I'm selling multiple sites at $50 each. Each has Wordpress installed with custom colors, but no content. I just don't have the time to develop these.

Without any content though they are already starting to rank in Google (I put the ranks I see currently on Google.

bostondrumlessons.com #13 for "boston drum lessons"
indianapolisdrumlessons.com #9 for "indianapolis drum lessons"
indianapolispianolessons.com #20 for "indianapolis piano lessons"
jacksonvilledrumlessons.com #8 for "jacksonville drum lessons"
memphisdrumlessons.com #5 for "memphis drum lessons"
milwaukeedrumlessons.com #10 for "milwaukee drum lessons"
milwaukeepianolessons.com #16 for "milwaukee piano lessons"
newyorkdrumlessons.com
oklahomacitydrumlessons.com #9 for "oklahoma city drum lessons"
oklahomacitypianolessons.com #11 for "oklahoma city piano lessons"
sanantoniodrumlessons.com #10 for "san antonio drum lessons"
sanantonioguitarlessons.com #21 for "san antonio guitar lessons"
sanfranciscodrumlessons.com #17 for "san francisco drum lessons"
sanjosedrumlessons.com #17 for "san jose drum lessons"