In 8 years of playing I've lost 2 discs. None in the last 4 years. Mostly because I am relentless at looking for them. This past December I lost 2 discs on the same hole in 6 inches of snow. I came back 3 times over the course of a week to search and eventually found them both.
^^^This^^^
I don't give up easily on a disc. Only once so far have I left a course w/o all my discs. That was my drive on
Hole 18 of Pennisula DGC as it was getting dark. After 15-20 minutes and almost full dark I left and then came back the next morning. Found it in just a minute or two, right by the walking trail in short grass in plain sight.
...I'm not seeing the point of putting something on a disc that costs more than the disc itself unless it's some special disc or one I just cannot afford to lose.
For 20 dollars I would rather replace the disc I lost than attach an obnoxious beeping object on to my flying projectile.
It is not just about the money, it is about the
time. I have wasted hours looking for discs. At
Water Works in November, I wasted over an hour hunting for discs. Not in the woods or rough, but on the fairway! Throw a driver over a ridge when there are leaves around and it can be quite hard to find. Supposedly Water Works is (one of) the best DGC in KC, but I went away from it frustrated, feeling like it was terrible, because of the time spent hunting discs and because of a lot of trouble finding my way around (but that is another story).
As far as the money goes, it is not like you would save replacing only one disc. You might save replacing 5 or more. Lemme see, (5 discs x $15[StarLite RR's]) + (1.5 hours x $20 [minimum of what my time is worth doing real estate appraisals]) = $75 + $30 = $105!
How is that not worth $20?
As for the beeper, I'd rather just spend the $20 on replacing a lost disc than having to listen to that thing beep for 2 hours.
They have an off switch. Watch the promotional video:
http://discbeeper.com/videos/
But mostly, I bought it to put on drivers for me to do field practice in the field behind my house. I spend much more time looking for my discs in that grass than actually throwing. So I just plan to put this first one on a floater and test it before buying in bulk.
The only disc that I've lost for more than 24 hours was one a couple of weeks ago in a field a block away that has knocked down tall grass. It was a $5 DX Shark, but I still have not actually given up on it... Anyway, that would not have rated a Disc beeper... Still, to save the amount of time I hunt discs in that field would be worth $20.
). But when it gets too annoying I just think to myself, atleast someone else teaches them archery 
