First, establish a presence here. No one is sending a stack of money to a stranger that joined 3 days ago. Not being rude, but you wouldn't either.
Once you have 8-12 months and some meaningful posts:
Take good pictures, outside in natural light.
Post all the specs etc. The more detail, the less questions you need to answer.
Research the value of your item, if you are close to new price, they would rather buy a new one.
Put a single price including shipping. Flat rate USPS priority is the same price to everywhere execpt maybe AK & HI. It's easy to research.
Oh and welcome to Rokslide! This is a great place to learn stuff (and spend money on new stuff you learn about

). And we can always use your unique experiences to teach us stuff we didn't know.