Those are about the same prices I see here for the scraps/drops/recyclables/leftover stuff too small to make what they normally make (whatever you want to call them).
OP's table site says the table he wants is 84lbs. At $.40/lbs that's $33.60 in material.
I personally look at those tables and the supplied videos and I see something that is geared for someone looking to spend a lot of money to start a new hobby and the assembly of the table would be their very first "project".
Sadly, it really isn't a good introduction to welding since most things you build or put together are not going to have all the assembly tabs to make it all fool proof. The company simply does these tabs to cover their own arses because they know they are marketing to people entering the hobby field.
I think the company marketing them simply purchased a big laser cutter for specific purposes, but with their purposes it left the machine with a lot of downtime, so they decided to create something for market (likely out of their own scraps) to decrease the downtime of their laser.
The software they use on some of those laser cutters allows someone good with the system to set down and design anything they can imagine, in very little time. After they design it, the software will automatically layout all the pieces so there is as little scrap left over as possible. A box with a grid of holes would literally be 5 minutes of work for a skilled operator to layout. The machine wouldn't take much longer to cut the parts for a small table like OP is looking for. Paying them $120 for an hour of their time, $33.60 for the materials; I think all parties would leave pleased with themselves.