Where might one go online to purchase a Singer Sewing Machine?

There are number of ways to buy a serger:

• You can buy sergers at a number of retail outlets - most hobby and sewing stores (Hobby Lobby, JoAnn's, Hancock Fabrics, etc.) have the inexpensive models for sale.
• Sewing machine/vacuum boutiques are great places, because they have Excellent customer service and a "mom and pop" store feel.
• You can also go to your desired serger brand's website, and see where in your area there is a dealer. The best serger brand is Brother, but you can also check Janome and Viking.
• You can also check for used models on ebay or Craigslist as well. Some people use their sergers for a month and get tired of of sewing.