Need Value for UZI .22 LR Conversion Kit

Have a person wanting to trade me several new ones made by IMI in the factory box, complete with instructions, Bolt and barrel assembly, and one each 15 round magazine. These are for the Model A or B Carbine. They are New In the Plastic Carrying Case. Need value to determine whether I want to trade with him for another item....Thanks!

If You Can't Buy a Pair, Get a Spare!