Looks exactly like the one I built, except I didn't use the pressed pattern trim on mine, opting instead for plain corner round which I stained. I used the next size up in acrylic thickness (just over 1/4") and while it is extremely solid, it is also heavy. Using the thicker acrylic will boost the cost rather substantially, though (I spent about $65 total for mine). Also, the thicker acrylic is way too thick to cut with a utility knife. But, if you place a couple of layers of masking tape on the under side of the cut line, you can use a sabre saw, with an appropriate blade, to make your cuts without casuing too much melting and burring of the material. If you are uncomfortable with this, you can get your pieces cut, for a fee.
Miter cuts on the wood can be made without a box, but it helps. Keep in mind, though, that if your "box" isn't square to begin with, even perfect miter cuts will not join well. I drilled holes and used screws and epoxy to hold my pieces together, so I needed the wood trim to "tidy" things up.
One can also chemically "weld" the pieces together using acetone, but I was afraid it would not hold well over the long-run with all the on and off lifting and twisting action.
It works great but for the price charged for higher-end tables, they could either include a cover or I don't think $100 or so more for a cover would be rejected.