I think it is worth pointing out NSoft's future plans as these may have a positive bearing on purchasing this product.
Guildwars II is intended to be released this year. And again it will be subscription free! Additionally the designers (who are ex-vanilla WoW) have stated they intend to make the game more "typically MMO" like with things such as persistent landscapes, Z-axis etc.
However any skills/titles etc acquired in Guild Wars can be transferred to
Guildwars II, the functionality for this is in the Eye of The North expansion including in this box. As progression in Guildwars is mainly about acquiring skills there is no reason at all not to play Guildwars now in anticipation of the delight of Guildwars II in the future. Ofc till the latter has a release date nothing should be taken for granted.
As to Guildwars, for what is intended it totally delivers, first class travel system, ditto questing, mapping, graphics and UI. And it is extremely cheap and, just as important, quick to find out what is intended!
However if you're into gearing-up, buying and selling, tradeskills, housing, flying on griffons then you'll maybe have to wait for Guildwars II.
WoW players will maybe get a shock when they hit level 20, about 50+ hours gaming, to find that progression is essentially based on acquiring skills and that you can't out-gear people in PvP!
As said above, this box is unbelieveable value for money.
I would guess that the PvE content alone represents 1000+ hours gameplay in superb and often beautifully crafted landscapes with solid inclusive lore/storyline. As the game is really targetted at PvP gaming (PvE is the alternative route to gaining skills sets), this is saying something.
Feel free to make your own call at no cost via Nsoft's trial version available from their website, you'll be up and playing within 15mins.