Would it be worth it?

[Pharaoh]

It sounds to me that you are below 14 years old right? Seeing as you rely on others for your income (only twice a year) means you aren't at working age, and probably aren't old enough to do odd jobs to make money, (mowing the lawn, etc...) .

Although it would be great to go ahead and get that ps3 so you can build on the library in the future(long run), it probably isn't in your best interest in the short run and the rest of this year.

I presume you receive money on your Birthday and Christmas. Seeing as you proposed this question now in February, and not in January or December means your birthday just passed. Which means that you won't be getting money until Christmas.

Even though Valkryia Chronicles is a GREAT GAME, it won't last you 10 months of playing time, and seeing as you won't have enough money for FF13, GOW3, GT5. I suggest you save your money, to buy a lot of wii games over the next year. Nintendo has a good lineup this year.

Option B: If you can continue getting maybe 10 bucks every month or so doing chores around the house, you could go with the PS3 and buy PSN games, like FF7, FF8, Metal Gear Solid, etc. as well as Valkryia Chronicles.

Edit: I forgot you said your birthday is coming up.  Same idea though.  Its still 10 months until christmas.