First - that's a great price! Eastwood sells the same kit with a few plastic clips for the air lines for $199, I think. I paid around $150 for the same kit.
I also bought a 100' of additional line and extra fittings directly from
http://www.rapidairproducts.com/index.asp, as my compressor is in the basement of the house, and routed the air line through an underground conduit to the shop.
Everything goes together easily, and doesn't leak any air. I installed the setup during this past winter. The tubing is *very stiff*. They suggest uncoiling it to relax the material. I left it in the warm basement for a week and it didn't make much of a difference. So, to cut it with the included tubing cutter, I warmed up the tubing with a heat gun for a few moments - and that worked like a champ -the stuff cuts like butter. Uncoiling might work during the summer, but in below freezing temperatures, forget it.
It is helpful to have another pair of hands to uncoil the tubing while you affix it to the walls or ceiling - else it's a bit of a pain.
You will need .5" black plastic wire loom clips from the hardware or electronic store to secure the tubing to the wall, studs, or whatever.
The folks at Rapid Air are very friendly and exceptionally helpful. I am pleased with the product.