1) Clearly Specify Payment Terms

One of the most popular questions I receive is "How Can I Pay?", especially off newly registered members. Make it easy for buyers to pay you, by offering a large option of payment processors - not just Paypal. Also, make it policy or not whether you will be accepting cheques as payment, some sellers decide this is more hassle than it's worth. If your selling hundreds of items daily tracking cheques can be quite time consuming.

2) Organise Your Products

If your selling physical products on eBay, and you carry them in stock make sure they are already to be dispatched as you list your item. This will ensure there's no delay while you find suitable packaging materials, and you don't risk losing the item amongst the rest of your stock. When the auctions complete, all you need to do is attach the shipping label and the sale is as good as completed.

3) Use A Mass Lister

Advanced seller programs such as Marketworks can completely cut down the amount of work needed & the amount of hours your spend on eBay. Automatically listing & relisting, email notification to yourself and your buyers, payment notification and automatic feedback are just a few of the features that are offered to sellers. Almost all powersellers use a service such as Marketworks to manage their ebay businesses.

4) Keep Upto Date With Your Accounting

Make it a habit to print our your Paypal and ebay statements monthly, they'll be needed for any end of year accounting you need to do. File them somewhere safe, as Paypal statements are normally only available for upto three months.

5) Delivery Turnaround

Clarify, when any orders will be sent out. The last thing you want to be doing is running to the post office every time a sale is completed, so make it an established practice to send out your products as the last task of the day, or even only 2-3 times a week.

6) Automatic Delivery On ebooks & Special Reports

If your in the select group of sellers who offers digital goods for sale, then there's absolutely no reason to spend hours on ebay each day. Programs such as payloadz exist so you can automatically send out your products as soon as the winning bidders completes the transaction. This reduces the need for you to check your email religiously every hour to complete any new orders.

7) Automatic Feedback

Even if you choose not to use a mass listing program, others exist to automatically leave feedback as soon as the buyer pays. Ebays selling manager pro, or other third party products can do this for you with predetermined comments. This is one less job to worry about, allowing you to concentrate on the marketing of your eBay business.