I'd say you are going to start at $750 min and go up from there, depending upon condition. If you are willing to take on that isn't 100% straight you can probably stay under 1k. if you want straight and nice condition, either refinished or original you might pay up to 2k depending upon the model, # of shafts, etc.
Example, I got a real nice condition R1, straight, with one shaft, original cortland wrap, micarta, etc. and I paid $900 for it some months ago. For 2022 I thought it was a good deal on a cue that I intend to play with all the time.