FS is an old Lee 45 ACP die set. It has sat in a 650 toolhead for years, neglected, because I barely shoot 45 anymore. They're rusty on the outside and dirty and that's why they will be cheap. That said they will work just fine. There is also only 3 lock rings. It's a 4 die set and has the factory crimp die.
New a 4 die set goes for $41 before shipping. This is old and beat up so $25 shipped will take it. The red box won't fit in an SFRB so you won't get that unless you want to pay extra shipping.