Are there any model clubs in your area? Perhaps you could arrange to take the kits to one of their meetings. It's best you get some idea of prices before you do though.
Recently a model maker passed away here in Malta and his son contacted the model clubs and agreed times when he would be at home. Many club members from the area popped in to buy kits. He had them priced .... not expensive prices ........... but not dirt cheap .........so he sold a lot. The important thing is to check whether there are any rare kits before you do anything. Some go for very good prices.