The lady in California definitely screams scam.
If you get a glider from SunCoast - the glider's will be shipped during the day in a secured pet container. It can be a much easier mode of travel for the glider than a long hot car ride if you cannot locate a glider locally. SunCoast is an honest reputable source to get a glider joey. I believe your scam reference was to the California seller, but I want to make sure future readers of this thread do not think you were referring to Suncoast.
Any time you post an "I want a glider" ad, you are just asking for the scam artists to contact you. I suggest you limit your search to responding to ads from individuals posting in the classifieds here (and on GliderCentral) that they have gliders in need of homes or joeys ready for forever homes.
Think of your own safety before going out to 'meet up' with someone to pick up a glider. Always take some one else with you.