We were just having a good laugh about this over on the Oaktable Network list. It appears as though MySQL is exhibiting a nasty arithmetic bug. It seems when they ran the pricing numbers through the database, free—or $0.00 dollars—became $40,000 dollars. MySQL represents the best of the Open Source model—lots of free code, yet The MySQL Website says:
For the price of a single CPU of Oracle Enterprise Edition ($40,000 per CPU), you can deploy an unlimited number […]
What ever happened to the real Open Source database model which is free download and something like www.mysqlfreaks.com/ for support?
Moronic Quote of the Day
Also at The MySQL Website is this jewel (emphasis added by me):
Not only does open source save money, it provides an architecture that is more scalable for modern web-based applications.
Whether or not your application is “modern” does not make MySQL scale better than Oracle. Sorry, nice try. I wonder if MySQL marketing is a volunteer effort to match the product development?
Kevin Closson's Blog: Platforms, Databases and Storage 
Yeah, “modern” applications don’t use constraints – no need as they use one table called DATA.
Modern application don’t care if they loose some data – you’ve got too much these days anyway.
And memory is cheap so you can have as much as you need to fit that data in anyway… or at least twice as much to be precise.
Today we received in our internal oracle support line, a request from a user that wanted to know what the status was of the mysql support in our lab. Why ? He argued “that nowadays many open source projects come with mysql support included”
Very good argument.. I was speechless..