Thank you BOTH for your interesting responses, and I also learned from the conversation that followed!
I'll provide some miscellaneous examples, so you have a better idea what I'm looking for. Then please give me any feedback/ideas you have about the more narrow question.
In one county in Florida, I have a contact who represents a land buyer living in California. He buys land, vacant or improved -- doesn't matter. I found him a 20-acre parcel for $3k/acre. Problem? He isn't interested in other counties!!
I am finding nice large parcels -- really cheap -- but just skip them (having no land buyers, yet). NONE of them are in areas like Lehigh Acres, either.
For instance:
10-acre for only $4k!!! (in a nice rural area of 10-acre parcels, horses, etc., and only 12 miles from the Atlantic!)
355-acre for $200k (near Daytona Speedway...)
30+ acres wooded parcel NE FL $20k
many more examples...
So, what I'd like to develop is a buyers list of people just like that California land buyer!! Someone who knows what they want, for how much, and when I run across it, then I don't have to "skip" it!! I'll just contact my buyer right away with yet another great deal.
I hope this further explanation helps a little.