Basic mobile phone with gps required

Hi, This is just a preliminary communication, not a direct request for quote. I'm looking for someone to build and program a very basic mobile phone using the following core components: Telit GE864-GPS chipset Lithium Ion battery being approximately 800mAh Full size SIM card holder (not mini/micro) Waterproof speaker and microphone The device has the following requirements (only key requirements listed at this stage): Only 1 button to make and answer calls as it will have a pre-programmed number. Determine its position using GPS or GSM Network (must work inside) Comply with relevant standards (CE, A Tick etc...) All components must fit into an external housing being approximately 60mm x 40mm x 12mm Have you developed cell/mobile phones previously? Have you worked with the Telit chipsets in the past? Are you a M2M solution designer? If so, can you provide a very rough estimate of what it would cost to develop a prototype of the above product, including all of the relevant documentation and design schemes required for mass production. I would just like a rough estimate at this stage, for a formal quote I would provide you with a complete functional specification. Thanks in advance