DS got hooked after riding Star Tours at the age of 28 months. He is now 11. We are now the proud owners of every model ship in both fleets, at least 30
Lego SW models, 8 light sabers, a huge library of SW technical manuals, at least 15 SW video games, and every film in the series, including the animated Clone Wars. Also a full-sized DV helmet.
Money? Oh, you betcha, though now he finances most of it out of his allowance. However, it's pretty much his only obsession, and he never tires of any of it, so it doesn't lie around unused. His Christmas list so far includes nothing but SW items.
We've never had a problem with violence related to the SW films, either with mimicry or scare factor. One of the oddest things about SW is that it is essentially bloodless; the weapons theoretically use heat so they cauterize wounds -- no one bleeds. Somehow DS has always been able to understand that real life doesn't work that way. By the time he saw the duel on Mustafar in Ep.3 (in a theatre when it was released, on his 8th birthday) he had already known for years what happened to Anakin, and known all along that it involved severe burns and loss of limbs. He just accepted it as a known part of the story.
I should note that the only time DS' SW obsession got him into real trouble with us was the year he decided that he wanted to be DV for Halloween. I think he was 7. He had a full costume, including the voice-change helmet. He lost Halloween that year because he decided to play Vader in character when he went to the houses -- he was preemptory and rude to adults answering the doors, and DH hauled him home after the second house.
PS: DS did watch PR for a while, but mostly for the laugh factor. Those shows have the WORST production values I have ever seen, and the acting is horrendously crunchy, too. When the monsters have visible zippers down their backs, even a little kid will laugh.