gsyme14 - Crystal controlled oscillators are easily available from mail order component suppliers such as Digi-Key, Allied Electronics, Jameco, Newark, eBAy and others. You will find most prices ranging from $3-$10 each. If you have a local electronics store you might also have some luck. You may see items described as crystal oscillators, but if they only have two terminals they are likely just the 'crystal'. A crystal oscillator module will usually have 4 pins minimum.