Apple began taking pre-orders for the iPad from U.S. customers on March 12, 2010.[3] The only major change to the device between its announcement and being available to pre-order was the change of the behavior of the side switch from sound muting to that of a screen rotation lock.[93] The Wi-Fi version of the iPad went on sale in the United States on April 3, 2010.[3][94] The Wi-Fi + 3G version was released on April 30.[3][4][4] 3G service in the United States is provided by AT&T and was initially sold with two prepaid contract-free data plan options: one for unlimited data and the other for 250 MB per month at half the price.[95][96] On June 2, 2010, AT&T announced that effective June 7 the unlimited plan would be replaced for new customers with a 2 GB plan at slightly lower cost; existing customers would have the option to keep the unlimited plan.[97] The plans are activated on the iPad itself and can be canceled at any time.[98]

The device was initially popular with 300,000 iPads being sold on their first day of availability.[99] By May 3, 2010, Apple had sold a million iPads,[100] this was in half the time it took Apple to sell the same number of original iPhones.[101] By May 31, 2010, Apple had sold two million iPads[102] and by June 22, 2010, they had sold 3 million.[14][103] Between July 1 and September 30, 2010, Apple sold a further 4.2 million iPads. During the October 18, 2010, Financial Conference Call, Steve Jobs announced that Apple had sold more iPads than Macs for the Fiscal Quarter.[104]

The iPad was initially only available online at The Apple Store as well as the company's retail locations. The iPad has since been available for purchase through many retailers including AmazonWal-MartBest BuyVerizon, and AT&T.

The iPad was launched in AustraliaCanadaFranceGermanyItalyJapanSpainSwitzerland and the United Kingdom on May 28.[5][105] Online pre-orders in those countries began on May 10.[4]Apple released the iPad in AustriaBelgiumHong KongIrelandLuxembourgMexicoNetherlandsNew Zealand and Singapore on July 23, 2010.[106] Israel briefly prohibited importation of the iPad because of concerns that its Wi-Fi might interfere with other devices.[107] On September 17, 2010, the iPad officially launched in China.[108] On November 30, 2010, the iPad officially launched inMalaysia.[109]

The South Korean Minister of Culture and TourismYu In-chon was criticized for using an "unapproved" iPad on a public occasion. It is illegal to use an unapproved electronic device in South Korea.[110]However, iPad was released in South Korea on November 30, 2010 through KT which also carries the iPhone.

The iPad launched in India on January 28, 2011. The 16GB iPad costs Indian Rupee ₹27,900 and the 3G variant of the same is Indian Rupee ₹34,900.[111]