For sale on the USA a used TekPower 1803D power supply. That is technically 18 volts, 3 Amps, but the maximum voltage output is 17.48 volts, it has been like that since the unit was given to me as a gift.
This power supply has two modifications: I replaced the regular pot with a 10 turn, and also increased the voltage meter resolution.
The price is: $40.00 USD + shipping
David.