Dear Marybou4
I have developed bluetooth products and applications and can give you your requirements.
For the current bid I offer you a BOM for a basic hands-free development kit.
If you would like to go ahead and refine and build a prototype then I can do it for you at the following rates :
a) Product design proposal with 3-4 design iterations, including schematics and PCB design with submitted CAD/Gerber files : 300 USD
b) Full working prototype development including PCB and mounted components shipped to you :
200 USD + Point(A) above + cost of components and shipping on actuals from reputed distributors and vendors. Timing for creating this will vary, and proposals are open to discussion/negotiation.
Regards