Check out the Dannmar Maxjax hydraulic/electric 2 post lift. You can get it delivered through Costco to your curb for around $2000. It's designed to be bolted to the floor and unbolted and wheeled to a corner when you're not using it. A few suggestions: Make sure your concrete floor is 4" inches thick and a 4000 psi mix. Contractors cheat and make the middle of the slab thinner than the edges. Have it installed professionally for around $200. Rewire the motor to run off 220 volts. It has mechanical pin supports at 2 feet and 4 feet above the ground. I've had mine for about 6 months and it's great.
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