It does not cost anything to receive copyright protection in most cases. For a watch, you would need to seek out a patent to protect your product, not copyright.
Protection is free and automatic.
No, but recent translations may.
The current fee is 200P. Bear in mind, however, that registration is not required for protection.
Ideas cannot be protected by copyright, only the original expression of those ideas, fixed in a tangible form, can be.
No, but recent translations may be.
Business names cannot be protected by copyright, but you can register it as a trademark for $375 on paper, $275 electronically.
It depends on the lawyer. Most copyright lawyers will charge around $300 to register a copyright, but the fee can also go up depending on what exactly you need the lawyer to do.
Copyright registration (online, fax, or snail mail) information & fee charts are available at the US Copyright Office homepage.
Names (including nicknames), titles, slogans, and common words/phrases do not qualify for copyright protection. In some cases, however, they can be registered as trademarks.
If you are creating original things--music, sculpture, poetry, photographs--your work is automatically protected by copyright as soon as it is fixed in a tangible medium.
Copyright is free, instantaneous and automatic for your creative works of authorship, at least in the USA and over 160 countries in the Berne Union. You may optionally register your ownership in the US Copyright Office for $35.