I only keep quarters. I have an acrylic coin collection box that I put them in. Last time I counted them about two years ago, it was at $553.75. I haven't been putting in as frequently, so it's probably shy of $600. The thing is a beast - I need to stick the box on a scale and see what it weighs in at! I keep them on the shelf above my computer, and if the shelf ever caves in, my monitor is going to be destroyed. I guess it's become more of an obsession than actually saving. I want to fill the box up to the top, but I still have a couple inches to go.