Haven't Played in a Year

Is the new version worth the money?

What new version? The expansion Eye of the North? If you Pug in PvE you will need it for one reason only.

http://guildwars.wikia.com/wiki/Ursan_Blessing

It is also a good game. So yes it is worth the money.

There is only one thing you need to know, good sir.

If you intend to play with people; Yes.

Basically, yes. Especially since you can find it now for less than $20 if you look. It has the repeatable dungeons with decent rewards, skills like the aforementioned ursan blessing and mindbender, and also raptor farming which is probably the fastest way to make money (especially on special drop weekends)