Hi,Yes, they'll ship to US mainland, that's where I'm located. =] And yes, only if you're a previous client. BUT..even if you ordered something like makeup/skincare from chanel.com..you're in their system and eligible for them to ship to you.
Are you sure about being on their list if you order from Chanel.com? Like many, I usually buy from NM or Saks Though I order cosmetics from Chanel.com all the time.