iPad is the first tablet computer developed by Apple Inc. that available for pre-order to US customers on March 12, 2010. Its available in two models, Wi-Fi only and Wi-Fi + 3G, both models may be purchased with three different memory capacities. If you want something different and has lots of money to waste for sure there are another iPad you can buy, the expensive one, yup.. a diamond iPad which features 11.43 carats of diamonds. The price tag for this diamond iPad is $19,999.