How many conversions should you expect for this spend?
I understand that there are a lot of things a conversion will depend on. Page design, copy, information, form complication etc... but in your experience, how many conversions (in this instance a conversion is a form submission about venue hire) would you expect for a spend of £250 in a typical month if you have your account set up to a reasonable standard?
Re: How many conversions should you expect for this spend?
It would be pretty difficult to comment on what the conversion rate would be. As you have already explained, many factors come into picture when we talk about a conversion/lead. There could be multiple touch points before a user becomes a customer for you. There are different 3rd party sites doing surveys on their own and coming up with some standard conversion rates varying from service to service. You can do a Google search and read those posts. Your primary aim should be that the campaigns you have set are relevant to what you are advertising containing relevant keywords, ad copies and most importantly the relevant landing page which is so informational that user is bound to either give you a call or fill up a form.