I am trying to sale my radioshack pro 163 scanner. I am wondering if i should trade it in or sale it.I am looking at websites but i do not like the price of it that it is worth.It is in good shape it has all the stuff that came with it.I am trying to get a pro 197 scanner for a upgrade that is new.Is the pro 197 a good scanner to get? Is there any pro 197 that is a good price? I need peoples idea and help?