Kamakura will build the binocular you have designed at the price contracted.
Bob
Exactly right Bob.
One point that is worth remembering is that the alpha brands make tiny quantities of binos containing precision-machined focus/dioptre components and there are only a limited number of companies willing to reprogramme their computer controlled lathes and then run them for a small length of time just to make what the alphas need.
Kamakura on the other hand must be manufacturing huge quantities by comparison with the alphas so if you can use a focus-set that they already have in production you can piggy-back on their quantities and get these components at a lower cost.
Lee