I hope people don't mind me posting billions of questions.. daily

I just want to be careful....
Anyway... I was thinking... how many times is okay to visit the breeder before I decide to put deposit? I just cannot imagine myself visiting the breeder once and decide... I would need a couple chances to ask all the questions... But then.. maybe a breeder would get annoyed... then if I don't buy a puppy from a breeder.. that might be bad too... If you guys can share your experiences, that would be great.
Arigato in advance,
michiko