Saiyan Prince Vegeta wrote:TheRed259 wrote:"Battle of Gods" watch :

I want that watch!

I was looking at it on eBay earlier, but it was like £530. I don't know whether go for it or not.

You should only buy it if the price won't daunt you from wearing it and you'll have it on your wrist every day for more than ten years. The watch won't be what's generally considered stylish so you'll want it to have a deep sentimental meaning to you. It's an expensive piece of merchandise.
It might be valuable from a collector's standpoint -- honestly, I wouldn't know -- and its resell value could rise in a few years, but I'm guessing from what you wrote that you don't want to just store it away, untouched. Though maybe it'd be nice as a mantlepiece of sorts. Unless you're a collector, I wouldn't get it for reasons that a collector would.
Personally, I wouldn't buy it. My mother always taught me, though unfortunately I don't always follow this advice myself, is that if you're on the fence about buying something, it probably means you shouldn't buy it.
Think about all the other Dragon Ball stuff you could buy with that money! Think about the apartment room you could rent for a month or two with that money! Or the weeks of groceries you can buy with that money! Or better yet, think of all that other Dragon Ball stuff you could buy with that money!
I guess the question is, do you really need to tell time that badly?