I bought a 3 litre pony and simple unbalanced Oceanic regulator at a dive show for less than I later paid wholesale for a Spare Air when I sold them, though admittedly there were several years between the two transactions. I used that Pony/reg for several years without problem and then gave the pony away. I still have the reg.
I sold my last Spare Air for not much more than I paid for it, because I was embarrassed to stock something I wouldn't use myself and wouldn't recommend to anyone else (talking about recreational divers - they may be great for other applications).
I sold my last Spare Air for not much more than I paid for it, because I was embarrassed to stock something I wouldn't use myself and wouldn't recommend to anyone else (talking about recreational divers - they may be great for other applications).