price difference of 4501 replacement ring

Use the original design but revise with below specs:

a) 2.7mm widths for both bands and 1.9mm top thickness for the wedding band
b) use the 2.7-3mm stone for the accents in below CAD. The prongs should be smaller when looking down
c)keep the 2ct (6*9mm) DEF Astro oval center , the accents is totally around 1ct
d)price difference $52.55