For me living in the American Idol area it is 99 cents.
2c per message
The cost to participate in a study at the Ipsos Research Center is typically free for participants.
The cost to participate in AdWords varies according the user's budget. They may spend as much as they want on the advertising. A promotional $75 is sometimes given to qualified participants.
36p
It's not on the market yet, it was just a prototype for the electrolux contest.
it cost 25 cents each text message
It may cost you at least $10 to participate in the sponsor link programs like pay per click.
Around $500 or so Leave a message if this helps
40-60 pence
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Normally it will cost about £5.00 but you would have to get in touch with a charity that will participate, they can cost more or less depending on size.
The cost depends on which music program you would like to participate in. Some music programs are free whereas some cost thousands of dollars.