Usually store it by freezing in gallon milk jugs; it keeps quite well by freezing. Another way is to toss a little yeast in it and let it ferment to hard cider and bottle it.
If you watch the classifieds, Thrifty Nickel, auction fliers, etc. you'll see old presses for sale every now and then. The least I've paid for one is about a $100. Paid $325 for the one pictured. Stripped the paint off it, made a few repairs to the wooden frame and finished it with polyurethane. The previous owner had lined the tray with stainless steel and added a gear reduction motor to run the grinder. If you find an old press, make sure the toothed cylinders in the grinder are not broken, or that the shaft the flywheel is on is bent. Most of the time the wood frames are in poor condition and will have to be repaired or rebuilt. The new presses being sold today are in my opinion inferior to the old timers, not to mention quite expensive.