I would just like to know if I want to buy a puppy, a Staffordshire Bull Terrier?

Why are you buying a dog breed that scares you this much? If you're walking into this purchase with misgivings and fears about the breed, it's not worth the money or the hassle. You're walking in assuming that these dogs are vicious, violent creatures. You can't even get your head around walking onto the breeder's property. How about you find a breed that you can deal with? You're going to have this dog for a long time. You can't be afraid that it's randomly going to attack you for the next 10+ years. And for the record, bad dogs are made, not bred. If you can't get past that, you shouldn't be buying this breed.