I'd really appreciate some feedback on an idea I've had. It's a DVD that plays the "Happy birthday to you..." song (that is traditionally sung before a child blows out the candles on their birthday cake). On the TV screen, the name and age of your child would be displayed, e.g. if your child was 6, and her name was Holly Smith, it would read, "Happy 6th birthday, Holly Smith". It would also say whom the DVD was from, e.g. "Love from Uncle David".
You would be able to choose a theme for the background picture, e.g. princesses, Bratz, High School Musical, Manchester Utd etc, and also choose the colour of the writing, i.e. if their favourite colour is pink, you could have pink writing.
Do you think many people would buy it? Do you think £5 (plus £1 postage) is a reasonable price? Can you recommend any improvements I could make to the idea?