Not nearly enough information for anyone to give you guidance. Are you b2b? B2c? Software? Services? What industry? Is your waitlist 10s? 100s? 1000s? Hundreds of thousands? Have you tested pricing false doors or just leave your email?
Leaving an email on the waitlist is about the lowest commitment someone can give, without more info no one can really give you any meaningful advice.
51/49 is usually a better idea.