Looking for HP97

[Siegfried]

I have a bit of a fascination for printing calculators, probably because the first calculator I ever laid my hands on was a huge, clankering addition machine surplus from my dad's office which my sister and I used to tally up bills when playing "shopping".

I am (therefore?) looking to round out my little HP collection with a HP-97 and even if there are no offers I'd be glad for some advice on how much to expect to spend for one. EBay offers go up to well above 500 USD which would be clearly outside my domain but is it realistic to get something working at a lower price?

Thanks!