check out wekiva falls park. It is between Orlando and Daytona. New owners so lots of good new changes being made. I think it is reasonable, not sure what you are looking for.
Look at Turkey Lake. It is a city run park. Some full hookups. We have stayed there many times. Great bike path and close to grocery stores and restaurants.
Other than Bill Fredrick Park in Orlando, finding a spot for the money may be difficult without going a bit further out of Olando. If you head south a bit to Haines City or Sebring areas you should be able to find what you need. RVparkreviews.com would be your best source. Suggest you start calling now - most years parks here are very full Dec-April. Snowbirds are already here - Dr. office and restaurants are full again.