Which one?
Early figure 8 maybe $75-100. Later circle pattern probably $100-150.
That's about it for me anyway. I personally don't think the demand is really there anymore for higher prices.
Might see $200 on the high end, but since 241's are so good, outside of the slip yoke there isn't a whole lot of reason to go 205, especially in a truck that didn't have one originally. Of course that's opinion, but I've got a 205 now, and a 241 with SYE will replace it. Rated for more torque, lighter, doesn't require hacking the floor up, the stock shifter works, etc.