The Houdini shops abound in Vegas which was both surprising and disappointing. The shops themselves are well kept and the staff at most of the locations I visited were entertaining and helpful to those I witnessed inquiring about tricks. However, I was disappointed with the narrow selections of mostly cheap plastic gimmicky novelty tricks specifically manufactured and branded for Houdini Magic sold at a premium price. Most are the quality and level you'd find in a kids magic set at any department store at Christmas time, so they are more toy than quality gimmick or trick.
The sales folks at every store try the hard sell on hovercard gimmicks and very cheap quality trick decks, but at least give the average Joe an entertaining exhibition to sell them on the product.
Don't get me wrong, for the shops they are they are ok, but not at all what I would expect from a "magic" store in the magic capital of the US. I was a little surprised to find Vegas only has Houdini shops and nothing more robust or at least with a varied selection.
If your looking for fun gimmicks for younger folks or stuff to entertain coworkers a few times, it's at least worth a stop, but don't plan to find anything worthwhile if you've ever dabbled in magic before. Your kids will probably enjoy the experience, but you'll most likely be disappointed.