The reasons are many for a product not holding value, with the most common being that the MSRP was too high and once the advertising hype is gone, the item is not so great anymore.
Someone mentioned the Apt-Holman preamp and it was a great amp, which I enjoyed for many years, but the printed circuit boards were cheaply made causing the leads to lift. I had mine repaired once, but PCB deterioration made further repair impossible, so I gave it to a fellow who had another. Also, you can bad mouth Japanese gear if you want, but the reliability of their stuff was outstanding.
Someone mentioned the Apt-Holman preamp and it was a great amp, which I enjoyed for many years, but the printed circuit boards were cheaply made causing the leads to lift. I had mine repaired once, but PCB deterioration made further repair impossible, so I gave it to a fellow who had another. Also, you can bad mouth Japanese gear if you want, but the reliability of their stuff was outstanding.