People, who knows, help, please!

My BF is obsessed lately about buying a boat. I think he doesn't estimate it correctly, i mean all the hussels like: fee for entering the port, maintnance, sanitation, cost of the "garage" etc.

I have know idea, what i'm talking about, i just know, it's very money consuming.

Please, answer in English, he doesn't speak Russian.

Thank you!