He shrugged at the loss of a sale. Thems the breaks.

"Well, there's this spyglass..."

He levitated out out what appeared to be a home-made spyglass, but with a small button on the side. It was also giving off small bolts of lightning.

"The idea is you see a place, you push the button, and the spell I've got on it makes it send down a little light-beacon, so you can find it. Not good for spying, but great for navigating!"

He explained in a polished-sounding voice.

"Problem is... The light beacon's a lightning beacon."