We all expected LION to do well at $29.99 but few people could have foreseen the incredible volume of downloads in the first 24 hours. Apple claimed this was the "best OS we've ever made" and the numbers seem to back their claim.
As you may be aware, LION is a download only product from Apple's Mac AppStore. For those that have slow or capped internet service, you can download it at any Apple store by simply bringing your device in using their free WIFI. Some wanted more so Apple delivered, in the next couple of weeks, you will be able to buy a version on a USB key for $69.