Want to buy the following filters in good working condition: 6.3 MHz filters (as in Corsairs, Omni V and VI) Model 282 250 Hz, 6 pole CW filter Model 288 1.8 kHz, 8 pole SSB filter 9 MHz filter Model 217 500 Hz, 8 pole ladder CW filter Advise price, please. Thanks and 73, Mike N4NT