Looking for Power supply 82066B

[Richie]

I own an HP 71-B fantastic calculator, but missing the power supply. Although it's available, asking price is very high for a power supply only.

Two options:

- Someone can offer this power supply for a reasonable price.
- Or I buy an adapter with same specs, but need the connector. Can anyone tell me which connector I should buy.

Thank you all

Regards,

Richard