Hotels in the baht-only casino zone advertise rooms for 1000B to 2000B – good value given the facilities. Cheap hotels and guesthouses, some of them brothels, are strung out along NH5 and around the bus station. As a general rule, however, don't plan on sticking around unless you are an inveterate gambler.
Try removing some filters. Alternatively, there are some nearby lodgings with availability below.