I would agree with DigiNames on value It's an eye-catching domain but with quite limited uses. The word 'Fad' doesn't generally have positive connotations, However in the right hands that could be worked around. I'm not surprised you've held it so long it's one of those domains requiring a unique buyer and probably one hard to find.
If it were mine I'd have it listed on every sales platform I could find accepting offers in the 4k to 5k and above price-line. If you get an opening offer it's a case of seeing/judging whether you could push it higher.