No you don't need to pay, although it might be worth seeing what you get for your money, and then you can decide for yourself if it's worth the expense. As long as you can prove it was in your possession before anyone else's then you're on very strong ground.
I write my own songs and I copyright by using the special delivery post option. That way I can put over a dozen songs on to a CD (used to be cassette tape) and then send it to myself. It works out as a very cheap option and it would be extremely difficult, if not impossible, for somebody else to say the songs belonged to them.
It's different of course if you have invented something and you need a Patent.
Also, it might be a good idea to do a little research. In my case case, it's very unlikely that somebody else would have written the same song as me, but as for programs and 'entertainment artifacts' then there might be a chance that somebody else has had the same idea.
BTW, what are entertainment artifacts?
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