1. Try to post as much information as possible while selling, eg links to products, tickets. Make clear whether the standard accessories for the item you are selling are included.
2. Post your location, so buyers/sellers can work out post or pickup, as well as delivery costs. Postcode and suburbs as examples.
3. Update the users on what’s going on with the sale, eg. its closed, decided to pull the items out. That way, old posts don’t get posted by users asking for information for items which has been sold already.
4. If you are posting pictures, reduce the size of pictures, or at least crop them. A thread with alot of pictures of items you are selling takes a long time to load if their sizes are huge.
5. Use a descriptive heading - "Stuff for sale" doesn't help buyers know what it is you're selling.
6. If there are special conditions (post only, no pickup. Goods not available till a certain date, etc), note them in the original post.
7. If you set an instant sell price, stick to it.
8. It is very helpful to posts at least a ballpark figure on the items for sale. this is a sticking point with me… Please use a RESERVE PRICE, and try not to post ‘Make me an offer’ you will only attract people wishing to purchase at insulting prices.
9. Don't advertise if you do not own the item, and try not to let another person use your account to sell stuff, unless you are willing to take the responsibility if problem arises, if this cannot be avoided please put all the information of the seller in the post and make it blatantly obvious that who the seller is.
10. If you set a price you will accept, honour it.
11. Be upfront and honest. If a thing looks good but you haven't tested it, then say so. If you can't sell (or post) for a week, say so. Always negotiate postage methods etc before finalising. Buyers should be able to assume that anything you put up for sale is in good condition, full working order, not stolen, and available for pickup/delivery promptly unless you say otherwise.

Method of payment :
COD : Cash On Delivery, means the user will collect the items and pay for them if when they receive it at the Post Office. COD charge must be paid in addition to postage.
DD : Direct Deposit. Direct Deposit is the process of depositing money into another users bank account, either at the teller or through internet banking. This may take a few days to clear, especially if the transfer is inter-bank.
Cash: cash.
Paypal systems: there are many such systems that exist, www.paypal.com/ , www.yowcow.com , also many others as well. Please research these for yourself and ensure that is it legitimate. They do incur a cover charge of roughly $30-$50,