I like to, at a minimum, light up a driver, a mid, and a putter myself.
I typically light up two or three drivers, a mid, and a putter though.
I have a few lights left i can sell tonight. They come in two packs for $3, so you could light up four discs for $6. The lights usually last me about 5 or 6 rounds. If you use them just once or twice and remember to turn them off, they would probably keep and be usuable next fall a few rounds too.
We sign up at 5:45 and draw partners at 6:00 if ya wanna come.