Puppies need a lot of love and care, and do involve cost.  He incurs expenses even before his arrival.  To make sure that puppy’s first day with you is an enjoyable one for everyone involved, stock up on everything that he needs before bringing him home, and then try to be patient as he settles in.   Don’t go wild and buy too much stuff, however, as every dog is different. One will love toys, the next will not care. One will play with a ball for hours, another will just want to sleep in its crate all day. So get the basics, then you can always buy more. Above all, it is better to have a pet showered with love and affection, than a whole bunch of expensive stuff it will never use.  Your biggest investments are good food, basic items like bowls and a collar and leash,  a bed and crate, perhaps a warm, waterproof coat and boots or paw wax for winter depending on where you live and how cold it gets, and lots of love and attention!