Aye.. then I just bought it for 250! Lol.. fact is .25s ARE rarer than .177 and .22 and rarer even than .20..... at least in springer format. You just have to read all that shecht about loopy trajectories and see that it puts lots of people off... newsflash.. EVERY calibre has a loopy trajectory... holdover is holdover- learn it and have fun!
I would say that if the gun in the OPs post was boxed it would be encroaching the 400 mark..like always though, the caveat is in the condition. If it truly is an unused very good condition gun that has been maintained (no crumbled buffer washer/seized/scored piston) then it may very well hit the 300 mark..
I'd wait for John & Josie and Garvin to chip in before posting for sale