The shop keepers are the ones who decide if they want to give you a good price
Cross Bows:
A-150 points B-145 points C-139 points
D-195 points E-167 points F-183 points
Golden:
G-210 points H-230 points
Bolts:
A-45 points B-30 points C-56 points
D-74 points E-61 point F-80 points
more to come