Though not super bargain basement cheap, I picked up a used pair of GR AV-1s from the original owner for $300 cash including an extra set of cabinets ready for drivers. This actual pair were the best speakers I had heard at the time when I was first getting into more serious audio and were what convinced me to start listening to more speakers.
These are fully upgraded with all options from GR, though they do have the original tweeter. They would have retailed for ~$700 as configured, possibly a bit more as the cabinets were custom built by a third party vendor for the original owner. I kept in touch with the owner for many years and when he upgraded, he offered me these guys and I bought them.