Ah yes, at that level, you've probably found lots of reasonable linear actuators - rotary motors paired with a screw drive - but I don't recall seeing any low-c

Ah yes, at that level, you've probably found lots of reasonable linear actuators - rotary motors paired with a screw drive - but I don't recall seeing any low-cost ones either. Maybe eBay is the best bet, but it's hit or miss. It does seem there would be a market for some low-cost options.