Another hint. It is very important to get a mule (dedicated trader) bound to the bazaar. The bags are very heavy and if you trip over your feet and die, you will return to your home port and not be able to move.
I keep all slots on mule full of trader bags, keep mules bank filled with trader bags in mule's bank for back up stock, and two deluxe tool boxes in joint slots, so I can stock my trader from my other toons. My mule also bazaar shops for all my alts. When I stock my mule I do not leave blank space, I just fill holes with cheaper, less profitable items.
The speed you sell something will depend on your price, but if you are in no hurry for the money you can price it a bit higher than if you are desperate for cash.
Some people put items up for higher than average prices occasionally just to see if they sell, not really caring if they do, example your toon's weapon, that you see all the time for a certain price. You may only be willing to sell if you double the price you paid. Then it's worth it and you can buy another. My mule sells his food and water at highish prices and people BUY them! I have my main toon stock his food and water. When I move I hate those out of food/drink messages, but I have made a little profit on it, which still amazes me.