The best lemon pastel ever wouldn't be on craigslist. Its picture might be...as part of a scam...

I've bought more snakes in person than I have had shipped. But I live in the DC metro area, and drive to PA frequently, so there's a lot of reptiles available in that area. Very few people have that much available to them "locally". If you can find a decent sized show near you, that's a good starting place, but mostly I'd recommend looking online and being open to having them shipped.