Thank you for the input, all points taken on board. However I will try to approach end users, it maybe I will not have any luck, but as they say "nothing ventured nothing gained". I know it is tricky to put a figure on it but you are all more experienced than I, so if you had to give a price what would it be, ball park will do. It is just to have a starting point if I do happen to get to chat with someone that may be interested, could happen you never know!
Regards