The H-I (Horrocks-Ibbotson) Tonka Prince is a sweet 7' 4 or 5 weight. The right line weight varies a little from rod to rod, and Pretty crisp action for a bamboo rod. I've seen them go for between $80-$200, depending on the condition and extras. A best buy, really, and a great introduction to cane rods. Cheap fittings, with that plastic reel seat, wormy cork, and nickel plated brass ferrule. But it gets the basics right. If you like it and want to keep it, you can customize it later on.
I'd make sure that the ferrules are on tight- the glue tends to get old. If the ferrules are making a clicking noise when you flex the rod, they're loose. Best to pull them, clean off all the old glue, fit them back on with epoxy or Pliobond. After you do that, a thread overwrap isn't a bad idea.
If you're planning on buying one or checking out the condition, the most important thing is the cane. It should be 2 equal sections, each a little more than 43" long. No nicks or splits, no splitting from the sides coming unglued. A bend or rod set is a little condition minus, but not a deal-breaker. It's surprising, but a mild rod set doesn't do that much to the casting action. It's rare to find a rod that's had some use that doesn't have a minor tip set, usually a slight downward bend. Even new ones aren't perfectly straight the way graphite or glass rods are. You don't want a twist in the tip, though. Luckily, that's rare.