2nd that^^^^^
Also, I've had luck with not posting the email (press the "hide" button on the listing), and putting my phone number in the listing instead. Surprisingly, I've never gotten any prank/solicitation phone calls, and people who pick up the phone and actually talk to you tend to be more serious than some dude shooting off a quick email saying he wants to see it. Got tired of 10 spam/scam emails for every "real" response to ads.
Ebay's a powerful selling tool, but you pay, and pay well for the use of their site. Ebay is a buyer's market, make no mistake. Buying something on ebay costs you nothing (no ebay fees), wheras sellers pay insertion fees, and then final value fees when it sells.