yahoo!オークションで検索価格は参考になりそうです。
<script language="javascript" src="http://atq.ad.valuecommerce.com/servlet/atq/jsbanner?sid=2219441&pid=874226780&cat=2084007205&str=0&rat=0199&pic=0&odr=1&siz=8&tcl=0000ff&mcl=000000&lcl=0000ff&bcl=ffffff&vcptn=auct%2Fp%2Fjlmhz6RzKaNiC6kbNGwO"></script><br /> <p><br /> <a target="_blank" href="http://atq.ck.valuecommerce.com/servlet/atq/referral?sid=2219441&pid=874226780&cat=2084007205&str=0&rat=0199&pic=0&odr=1&siz=8&tcl=0000ff&mcl=000000&lcl=0000ff&bcl=ffffff&vcptn=auct%2Fp%2Fjlmhz6RzKaNiC6kbNGwO"><img width="300" border="0" height="200" src="http://atq.ad.valuecommerce.com/servlet/atq/gifbanner?sid=2219441&pid=874226780"><br /> </a><br /> </p><br />