[Heathkit] SB-230

[Richard]

I am trying to finish my SB-104 station.  I started it in 1976 when I built
the SB-104.  I even did the "A" upgrade.  The only thing I am missing is the
SB-230 amplifier. 
 
I know the horror stories associated with the high dollar tube.   For now I
would be happy with one that is intact except for a bum 8873 as I do not
have a lot of disposable income.
 
I haven't seen one at HAM-COM the last few years.
 
How much should I expect to pay other than on the e*pay place:)  
 
thank you and 73
Richard W5SRB