That's a difficult one. They want to know what they are letting themselves in for, so if you quote your top rate e.g. in my case calling a ceilidh a band 'up to ?500 depending which band is prefered/available' they might take fright and never come back to ask your cheaper options 'under ?200 with accordion & PA', or reluctantly '?100 with recorded music for tiny numbers'. But if you start too cheap they might baulk at the option they really need. Not that I do the recorded music option any more - have done in past for kids parties.