I just upgraded to the new Apex, so I'm selling some of my older stuff.
Apex Classic Base Unit - $100 (just a base unit, You need to have an EB4 or 8 to operate)
Apex Display Module - $60
Apex Temperature Probe - $20
DC4 (Direct Connect, not EnergyBar) This works fine on the Apex Classic - $50
DC8 (Direct Connect) $50
Lunar Sim - $20 (This is the Older DC style, but works fine with the current LED strings that they sell for the new version)
Litermeter 3 Base unit and 2 remote pumps $50
(
http://spectrapure.com/LiterMeter-III-Precision-Dosing-System-115V)
Bag Filter Media ($75 for the entire lot) (These are all poly felt bags)
16 - 12 x 14 /w drawstring NEW $3/ea
8 - 12 x 16 (1 new, 7 used but washed) 2/ea
9 - 6"dia x 14 /w plastic ring NEW $3/ea
20 - 4"dia x 12 /w plastic ring USED but washed $0.50/ea
12+ bags Mrs Wages Pickling Lime (aka Kalkwasser) 16 oz sealed bags $10 (for the lot)