If you think of ebay as ADVERTISING for $150.00 I don't think you are going to find better exposure. As for flakey buyers, you are going to find them in ANY advertising venue.
Agreed, and I always sell via Buy-It-Now with Best Offer. This prevents clowns from ruining your 'auction' with bogus bids they have no intention of honoring. With BIN they have to put a cash deposit down upon offering, even. If they fail to do so when you've accepted their offer, your listing continues unaffected. The most important part, though, is that you can vet your buyers. That's absolutely essential.
Obviously, you do NOT accept paypal payment for a car on ebay. Cash or a cashier's check that you can VERIFY over the phone (it is easy, you call the bank and ask) prior to release of the vehicle.
All kinds of bank checks can be forged or stopped. Many years ago, I learned that banks treat other banks' official checks about the same as they would a personal check. You have to wait for them to clear. I make this known to buyers who--without exception--have elected to wire the funds to my account instead. Then I FedEx them the title so they can get tags & registration. Then they can come pick up the car or send their shipper.
Naturally, I only get away with this because of a stellar feedback record. I maintain two eBay accounts: one for high-dollar items like classic cars and one for everything else. I don't want to risk my rating on the former over some trivial transaction.
But yes, the main value is the exposure. Under NO circumstances should you expect eBay to come to your defense as a seller, no matter what's happened. Caveat vendor!