Apple 1991 PowerBook 100 vs. 2011 MacBook

Here's a website with some great historical data on Apple products back to 1976, with specifications and retail prices. The laptop above is the 1991 PowerBook 100, which retailed for $2,500 ($4,150 in today's dollars), and had a processor speed of 16 MHz and disk space of 30 MB.  Today's MacBook Pro (picture below) is 125 times faster (2 GHz) and has almost 17,000 times more disk space (500 GB) and sells for $1,800.