On Mon, 11 May 2015 22:50:46 -0400
"John Grossbohlin" wrote:

In constant dollars (i.e., adjusted for inflation) the price is
probably pretty close to what the big Erector Sets and Chemistry Kits
cost when I was a kid...

they were expensive too but this gadget would probably be cheap
compared adjusting an erector set price for inflation

but $500 is still a lot of money and they could get rid of the
flashlight to shave off some $