M1 bayonet parts worth?

I have a friend who has a number of spare parts for M1 bayonets (Garand) - crosspieces, (plastic) grips and bayonet catches. All are original and not repros. Any idea as to price. All are Parked and are virtually new/unused.

Thanks!

RtL

I see the grips advertised in the $20 to $30 price range on various sights.