Toad, the Mario furniture can be catalogued, but not bought. You can buy the other Mario/Nintendo stuff though. Big and Lil Bros hats and shirts, Big Bros Stache, Master Sword, Triforce, Arwing, Nintendo Bench, etc. I may have more SMB furniture, Block Flooring, and Mushroom Mural soon. I may even be able to get any item you want. I'll let you know details if my source follows through.
Edit: Thanks for the correction, Toad. Also, please change your sig. It's too long.