What is the typical wait from payment to delivery? I know you can't be specific, but just ballpark it (eg. a few minutes, a few hours, etc.). I'm not sure what

What is the typical wait from payment to delivery? I know you can't be specific, but just ballpark it (eg. a few minutes, a few hours, etc.). I'm not sure what the book's letter-count is, but the price was $2.82. It's only been about 10 minutes, so I'm not displeased, just curious what to expect. Thanks!