Those things have been around for years and sold under different names. They are tiny toys. The whole thing is really only about a foot long. Even Harbor Freight sold them for a while as a 6-in-1 version or a "deluxe" 8-in-3 version. IIRC the HF 6-in-1 was less than $50 and the 8-in-1 was less than $100. I can't seem to find them on the HF website now but I have seen them in the store recently. The HF item number for the 6-in-1 is 40101 and the 8-in-1 is 40102. They still seem to sell the accessory kit item
3116 for $25. As with everything at HF, things come and go. I sure wouldn't waste $500 on one of these little toys but if you wanted a toy to play with check your local store. I think I have even seen them in there on "sale" for less than $30 and just couldn't talk myself into it and I will buy anything just about for the fun value. If you want something cheap for ~$500 you are probably better off with one of
these and one of
these.
Here are the online manuals for the HF
40101 6-in-1 and the
40102 8-in-3 to give you and idea what a toy they are. You are really probably better off machining with a Dremel than one of these. YMMV.
Edit: Here are some more links:
http://www.xendoll.com/english/file/products.asp (real slow)
http://www.sunequipco.com/Mechanical/wood/INDEX1.HTM