Marz, do you really need to ask this question? Surely you could have worked this out for yourself, especially after the other threads there have been on this subject.
Its a total ripoff like Jim says. There are clearly screenshots of commercial games, including N64 titles. At the bottom of the page it states that all titles are freeware and distributed with the authors permission. Now either a) He is talking bollocks there, or b) There are no commercial game roms included, in which case is is blatantly trying to give you the impressive that there are by showing screenshots of them all. Either way, he's trying to con you. Even with a 56K connection, you can download almost anything and everything that you might need without having to finance ripoff merchants like this.