If you're a ham looking for an inexpensive room in Dayton in 2015 for the Dayton Hamvention, there are a number of economical choices available. Most of the following deals require prepayment at the time of reservation, but there are bargains to be had. All of these hotels are within 20 miles of Dayton. They're national chains, and while not five-star accomodations, are generally quite adequate. The prices shown were available when I checked, doing a search for a stay from May 14-18, 2015. I did this search in December 2014. Prices change on a constant basis, and some will undoubtedly go up. In most cases, there will also be some additional fees for booking. But if you're avoiding a trip to Dayton because of the perceived high cost of hotels, there are bargains to be had. You will need to check the prices yourself, but the following prices show you the approximate cost.
These prices might go up, and other prices might go down, since prices tend to change on a daily basis. It's probably worthwhile going to Hotels.com and running your own search. I found the prices shown below by doing a search for a four-night stay, May 14-18, 2015.
Super 8 Dayton
Days Inn Dayton South
Super 8 Moraine Dayton Area
Days Inn Middletown