yes, I'm going to offer the boards for sale.
Regarding API2520 , the original at 15V supply has a quiescent current of 15mA and 22mA at 20V supply.
But , several clones of it have different active components so at +-16V supply they are in range 16-25mA.
Regarding the APP2050 it have at 24V supply 25mA of quiescent current, but APP2050 isn't an exact clone of the 2520 but an improved version of it, infact, it run at 24V. The original API2520 (and all clones that I know) doesn't run at 24V.
Regarding API2520 , the original at 15V supply has a quiescent current of 15mA and 22mA at 20V supply.
But , several clones of it have different active components so at +-16V supply they are in range 16-25mA.
Regarding the APP2050 it have at 24V supply 25mA of quiescent current, but APP2050 isn't an exact clone of the 2520 but an improved version of it, infact, it run at 24V. The original API2520 (and all clones that I know) doesn't run at 24V.