Complex sentence: The catalog distributes products from a number of luxury good and specialty manufacturers, and sells items that customers may not realize they need, it is most analogous to retailers The Sharper Image (whose products Skymall carries) or Brookstone.
Split into simpler sentences: The catalog distributes products from a number of luxury good and specialty manufacturers, and sells items that customers may not realize they need. In these respects it is most analogous to retailers The Sharper Image (whose products Skymall carries) or Brookstone.