I'm not seeing the appeal.
Better to grab some card boxes from the supermarket, just ask, they'll give you loads. Get hold of some masking tape, or better yet hot glue.
Use scissors, or better, a box cutter!!! Lay out flat card board, flat packed boxes give multi layer advantage and stick together, or leave apart for a multi part board!
Draw on your design with a texta.
Cut 1-2" strips, depending how high you want the walls, these can be sloping. Glue the strips around as per your design.
Make some circles from strips (narrower ones, if your others are sloping) glue under areas to be solid ground for support, just a few will do.
Cut out sections from more boxes and glue on top of spacers and glue/tape to top edges of walls.
Paint the thing with pva glue add match sticks or tooth picks for wooden wall timbers and flooring, sprinkle over sand and grit. once a bit dry, wash with watered down pva for a solid finish. Once dry spray black and dry brush browns. Glue on some flock here and there.
Done!
Looks, could be 100%, likely 60-80%.
Cost a couple of rolls of tape and or a packet of glue sticks. A bottle of pva, some matchsticks and the paint. $30 USD for a table? Maybe? Maybe less?
Fun time had, definitely.
Fun times to come, you know it!