Unfortunately there are only two ways to make a Pandora:
- Using a PSP which can already run homebrew
- Using a LOT of courage - opening your battery and desoldering a pin (warning: risk of *boom*)
So besides that, you have two choices;
- Buy a Pandora and do the Magic MS with your PC. (Pandoras vary in price, but you can't buy them in brick-and-mortar stores)
- Let the guy do it for you (at the cost)
So there's your options. If you need more info don't be afraid to say so!
BTW, welcome to PSP3D!