Well you see a Studio Scale or Signature Edition is something VERY pricey.
I mean, what would be better to top off a collection as a centerpiece? A lightsaber with a plague signed by Mark Hamill, or a regular replica lightsaber?
I would probably only purchase one or two SE or SS over my entire lifetime though, and I would save up for it in advance, so I still have money for dates, food, gas, games, drinks, nights on the town, etc..