How much would a cv boot part be for 1997 lexuse es 300 3.0p sedan 4a

You will have to contact a shop that repairs cv joints and drive shafts
genuine ( same as generic) will be expensive
the real cost will be to remove the drive shaft to fit the boots
however there is a boot that can be fitted over the cv joint with removing the shaft
lot cheaper and con be done by anyone with a bit knowledge and tools
available from cv joint shops or some auto spares shops