You are not limited to the online Market for your shopping. Several people have set up in-world shopping centres. Here are just three of my favourites, in no particular order:
1. Henimations - the place to go to get your animations and animation overrides (AOs).
2. Marquis Gallery and Club: soothing music and bubbles as you shop.
3. M&M Creations: sells both men and women's clothing. Great selection!
And there are so many places to shop for home furnishings that I will do them as a separate post, later.