need some little advise here
getting quote from 3 different vendor with much differ price

all 3 vendors offer
MS , powder coating

A.
3mm frame, 1.2mm bar
RM16k

B.
1.2mm frame , 1.2mm bar
RM15k

C.
1.2mm frame, 1.2mm bar
RM11.5k

the price difference is kind of kinky here, am i right? haha