I need linear actuators for two different functions. I need one to elevate a platform approximately 4 inches, weighing between five to 10 pounds and I need an actuator to slide a platform horizontally up to 3 feet, weighing about five to 10 pounds as well. I have done considerable searching for actuators, but most of the ones I've come across are for industrial/commercial uses costing at least $100 for each actuator. My price range would be about $15-$25 per actuator.