Does the motor from the video come with the kit? If not, do you know if they sell that additionally?

No it doesn't come in the box but I just say a new advertisement showing they are now selling the motor kit separately.

Can I use any type of marble?

These kits come with 8 chrome steel ball marbles but you can buy more - amazon has them, just be sure to get the correct size 11mm or 3/8".

How fragile is this? Would like to build at one location and transport to another.

It's sturdy, but it's clearly man-made. It's movable from one room to another. I wouldn't load it into a crate with other toys and expect it to survive all in one piece for long.

If i've already assembled the skate park, can i get this and get them to work together?

Yes. You can actually make them work together and then switch to working independently. In fact (if you're REALLY fast) you can do it WHILE they're running.

Marbleocity Dragon Coaster

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