I don't have the trick yet, hoping to get it for Christmas or my birthday coming up, but from what I've heard it last a while. and even if you need a new gimmick you can buy a new one. I don't know how much it costs, on Amazon it is $25 though.
See if you can make some extra money, I'm younger than you and still make money to buy tricks. I give my parents the money and use their paypal to order it.
I'm not too experienced but it sounds like you are shy, so maybe try some self-working tricks or other things where shaking doesn't matter. Hopefully over time as you perform for people you won't be as nervous and won't shake, and can do more things involving cards and sleights.
Was wondering the same thing, can someone fill us in? I wasn't here last year and I am so confused. All I have gotten out of the forums is that you can get elite points.