That's what I always say about CL vs. e-Bay! There is nothing wrong with CL. You meet the seller/buyer in person...you get to "play" with the item...and then buy it if you want (or not). No shipping or Paypal costs like e-Bay...or sales taxes...and you pay or get paid in CASH!!!
e-Bay is ok for the occasional hard to find item...just not as good as it used to be!
CL is just an electronic version of a newspaper classified ads...which is the way almost everyone advertised used stuff for sale (or other printed weekly material)...before the internet!
But still people like to bad-mouth CL...confusing!

Sure there are scammers on CL...so you just ignore them. You're still meeting people in person...and you should be knowledgeable about what your buying so you don't get scammed!
I have at least 5 used Macintosh computers that I've purchased on CL that were absolutely "KICK ME IN THE HEAD AS HARD AS YOU CAN!" if I don't buy it sort of deals...to many other "good" deals!
NEVER pay the asking price...period! Ha ha!
- Nick