There's a fair amount of work cutting the wood just so and drilling/bolting everything together, but this is very solid.  I built it to support my wood planer, which is about 25" x 48" and weighs a LOT.  It's remarkable how much more I use the tool now that it's easy to wheel out and do a quick job, blow it off and roll it back to its parking spot.  Well worth the money for me.  Now that said, I bought a similar set at Harbor Freight for about $5 less and it's a little different - instead of the flip up/down thing to make it mobile, this one is on four casters and rolls around until/unless you lock it down with two screw sets; I put my band saw on this one.  I would say either is fine, but I would give a small margin to the less expensive one from Harbor Freight, but it's a close call.