Notices section in your local newspaper often advertise county/city auctions. One of those, I salvaged 2 pickup loads of mobile/portable/base radios, sirens, lightbars and the likes, all for $260. I lost out for competition an online auction with about 300 Ericsson P7200s complete, batteries, holsters,antennas,chargers,etc,,went for a tad over $1500.
Before DOD auctions went online and competitive, I got semi trailers of test and radio stuff, by the ton. Where my huge transmitters and racks of (expensive) receiving equipment. I still use a good O scpe from a lot.
Right time,,right place, one can still get deals. My Kimball desk($2600 new) cost $2.50, soon to be my work bench.
3-40V/50A power supplies for $55, sold one for $200.
Tons of Motorola stuff since the change to NexEdge, now that is even showing up.