1) Quality & value. Something can be of great quality and little value, or low quality and great value.... the trick is to find the things that are both.

2) Name brands, so you know what you are going to get

3) Off brands, when someone has an unrecognized but great product (see quality & value).

4) Cutting edge, what's hot overseas that isnt here...yet

5) Knowledgeable customer service (or a good product FAQ)

6) Delivery... not that it has to be shipped overnight, but that it ships when you say it will ship and arrives when you say it will arrive.

7) a good return policy that does not allow people to abuse it (don't want a "Ricks rental shop") but does not harshly penalize a person for ordering something that turns out to be not what they wanted. Reasonable restocking fees and full store credit are acceptable, but "too bad you bought it it's yours" is not.