1-800-contacts is based in the US. Pricing in USD. They accept Visa, Mastercard, Amex, and Discover. You can also finance orders over $150 with their "Bill Me Later" option ("don't pay for 90 days") which is arranged through CIT Bank. They appear to ship just about anywhere in the world. Methods of contact are through their 1-800 number, a "contact us" form on their website, live chat, as well as the "We'll Call You" feature. The BBB has them listed with an "A+" rating, with a total of 39 complaints, all of which were resolved/closed.
1-800-contacts is a popular online contact lens retailer. The seem to promote the "We'll Call You" feature where you enter your phone number and one of their representatives give you a call. You can certainly order online, presumably without any need for verbal communication, but it's an option available for those who want it. The website is easy to use and navigate. Pricing seems reasonable. They have a price match guarantee, so if you find a lower price online (total price after shipping + all charges), you can email them or input your phone number to have them call you, and they will refund the difference. Having them call you is probably a better idea, because if you order first and they decline the price match for some reason, you might be out of luck. They offer free shipping on orders over $50 to Canada and the US. Large orders often qualify for a rebate certificate, although I'm not sure if they're valid for international orders.
When ordering, you have to create an account, which is pretty quick. If you live in the US, you will have to provide your optometrist's info. If they do not have your optometrist listed in their database, you may have to phone in the order. If you do not live in the US, this step is unnecessary.
A little searching showed mainly positive input from others about 1-800-contacts. A BBB search showed 39 complaints against 1-800-contacts, all of which were resolved, which is a fairly good sign. Between the price matching and the apparant willingness to resolve customer conflicts, 1-800-contacts is probably a pretty decent place to order from. In the event you were to have any issues that weren't resolvable through 1-800-contacts directly, going through the BBB would probably yield results.
To compare online stores, I use the pricing for a *single* box of daily, 1-2 week, and monthly lenses made by CIBA. Remember that if you have a different prescription for each eye, you will need to buy 2 boxes - one for each eye. If you have the same prescription in each eye, you can buy one box, but remember that 30 lenses really means 15 lenses per eye when calculating how long they'll last.
Granted, you may be looking for other lenses, but this should give a general idea of what to expect when comparing prices - make sure you take note of how many lenses there are in each box to determine how long they're last.
There are faster shipping methods available for an extra cost.