Not way high on the price at all.
When it was readily available, it retailed for about $12. Now that it's hard to come by, it'll sell for $25 easy if the can is in good shape and unused. I sell cans for $29.95, plus $5 shipping. Maybe you need to list it over at meguiarsonline or eBay.
Barry, ADS lists the wax as out of stock for well over a year now. It's flat tough to get stock.
Before it ships, I pull the wax out of the can, melt it, and pour it back in. Takes a day extra but at least I know the stuff arrives in good shape.
A pain, but I don't mind doing it for guys that really want a can or two. There have been instances where I've sent a can with the wax in perfectly good shape (even cans I bought directly from Meguiar's warehouse, so I know it was never frozen or got too hot), and the wax went to a pudding-like consistency. So far, melting the wax to a full liquid state and re-pouring it works great. I toss in a bit of extra wax from beater cans just to be sure the quantity is adequate.
It may not be worth it to some guys, but those that enjoyed using it appreciate that it's still available.
Others want a can so they can try it out, or simply for nostalgia sake. At $15 its a killer deal.