Dude, thats a fortune...
I'd have to pay like 30 dollars for 100 of them. I paid 30 dollars for 500 of them off ebay.
Agreed. Just go on eBay and wait for a good deal on them. There's almost always someone selling them for a good price there. I got 75 of them for $7 (including shipping), and I'm sure there's even better deals.
^^ Build Sheikra as long as you won't lose interest. A good coaster is always a good coaster. I would suggest implementing a holding brake at the top of the drop though. Just use a motor switch that would raise and lower a braking device on contact with the car.
Well, I finally fixed my computer, but my iPod is still broke. The computer does not want to recognize it, even in restore (DFU) mode. Hopefully, I'll have it repaired soon so I can get that foundation built on Calypso.