Yesterday I was looking at this exact jack for my floor leveling project And it was $49. Now 40% off for 29.98 no code needed. Can't speak for the quality of the product but I'm giving it a try for this price.
Torin Big Red Hydraulic Bottle Jack, 20 Ton Capacity https://www.amazon.com/dp/B000234...QAbQJ8YGEN
Free shipping for prime members OR with a minimum purchase of 25 dollars without prime.