According to findlaw.com, the answer is yes, consumers may sue online retailers.
“(Y)ou may be able to sue certain large online retailers, but you are bound by the terms of their online user agreement. Those agreements vary substantially from site to site,” they say.
“At least one allows you to freely sue, but only in a particular county of a particular state. Others allow you to bring a case on your own behalf in your local small claims court, but you must submit larger claims to a process called arbitration. At least one requires arbitration, but you can opt out of arbitration if you notify them within 30