I just received the following in an e-mail from NewEgg:

As a result of recent changes in the State of New York Tax Law requiring certain out-of-state retailers to collect and remit sales taxes to the State of New York, we regrettably inform you that Newegg.com must begin collecting applicable state and local sales tax for all orders shipped to New York addresses on or after June 1, 2008.

There’s a good reason why businesses don’t charge sales tax to purchasers who are out-of-state, and the reason can be found on Wikipedia‘s Sales taxes in the United States page (bold text added):

Note: Taxes change, are added or eliminated frequently, so this article is prone to being out of date. If so, please change the page accordingly and cite a source if possible. There are private entities that distribute updates weekly regarding the rules in 11,000 different tax jurisdictions in the U.S.

New York State itself has 81 different sales tax jurisdictions . . .

→ Read More: Is it time for a national sales tax?