lol I don't see why someone would want to change their gender really... I guess I could understand if you've been lvling this guy cleric and he reachess like lvl 58 or something and then you go, ohhhhhh all of a sudden I REALLY want a girl cleric but it will take me FOREVER to get back to 58. But $10 for one gender change, and if you are where I am that can mean $15-$20
AND you have to buy the beautyshop coupon again if you want your hair and face to change.
So in my opinion it's not worth it.
BUT I do love the fact the beautyshop coupons are on sale 1/2 price if my parents would let me have more sparkcash I would but more for my other chars, coz I got mine from valentines day.