I buy lots of 10.7 and 10.8 iF vintage police scanner crystals. There's almost zero demand for the older VHF-low band, but I take VHF-high and UHF. I take them all, as is, and no inventory by frequency is necessary. Just give me a rough count (no VHF-lows please) and I'll make you an offer. Keep in mind that only about 15-20% of them will ever sell, and it could take years. Unless you're marginally insane (like me) and have dozens of hours to dedicate to these things.