G'day, ok, so a big benefit of a store is being able to list items in multiple quantity and run them for 30 days or good till cancelled.

It only costs 20 cents for the buy now if you list for 1 day or 30 so i prefer the 30 day good till cancelled listings.

You get a lower final value fee = bonus.

Upload lots of pics to give buyers a good idea of item etc.

A good detailed description and layout makes your item look like you are professional.

Personal communication with the buyers after sale letting them know there item has been posted etc instead of auto item sent is a good way to build a customer base.

Alot of people wont reply, but some do and they appreciate the fact you spent the time to email them, this can help build a friendship and repeat business with them.

Building feedback and getting lots of good comments will help build trust with your buyers.

Post quickly after cleared payments and reply to any bad feedback you recieve in a professional manner as this reflects on you as a seller how you deal with your customers.

If you are going to open a store, i would make sure you have alot of photos of the items you are going to list and sizes etc worked out before you open it, so when you do you can just list them all promptly.

Rather than open a store and go, ah well better start taking photo's and slowly listing items now.

Hope this is of some help.

Cheers!