I agree, too. A couple of years ago, I bought a Humminbird 575 from another member who was upgrading to side scan. Cost was within your $200 budget...with enough left over to buy a used low-end unit, too. The 575 has Quadrascan, the widest image cone available before side scan was introduced. It's an excellent finder and I still use it. Even if you don't see something for sale in the classified listings, post a want-to-buy thread & maybe someone has something he hadn't considered selling until now.

Used DFs can be great deals, but you want to see it operate and you need to check the wires carefully for damage and kinks.