You can buy a nice block of "restaurant" type towels at Costco for around 20 bucks, maybe even less I can't recall the exact price, for that you get 60 of them! Edges are all hemmed, they're a bit thin but for the price it's tough to beat.

I use them frequently while working, soaked in some ice water they make a real nice neck wrap or face wiper on a hot day. I keep a cooler of them soaking with a teaspoon of lavender scented bleach added to the water and ice.