How much worth is a new Pentax A 300mm 4.0 telelens?

[Markus Maurer]

Hi Pentax users
I see a *new* Pentax 300mm 4.0 A lens here in a auction and wonder how much
it is worth.
I see some quite good reviews on Stan's page but would like to know how much
you would pay for it?

thanks for any answer
Markus