In regards to the design we would like to use a 3ml vial in plastic that can be inserted into a reusable pen. We would like the reusable part of the pen to be shorter and this can be achieved by the pen only dispensing about 4 clicks maximum.What sort of cost do you envision for designing new moulds for a simpler insulin pen like this? How much do you think each pen would cost there after to manufacture. Could you please give me more details about your company, your address and website please?I am looking forward to working with you more and talking to you about this project and seeing if this is feasible for our product. Kind RegardsPeter