Question a out the back case screws (tri wing screw driver)

So I live in Germany, where the necessary tools need to extract the screw - at least I think I need a tri wing y00 for this - are really expensive. I'm talking 10€ just for the screwdriver + shopping costs! I heard a rumour that the Wii and Ds lite used the same screws as the n2dsxl.

But after some research I saw that they were tri wing y0? I don't know if the above statement is true, which is why I need an experts advice!

Is there any previous common device that uses the same back case screws as the n2dsxl and/or did the Wii use the same screws?