For the price of $25 dollars, I think that this is a pretty decent set of cups definitely great for any beginner. There is a slight wobble when the cups are nested together so if you're nitpicky about the nesting its something to consider. The cups would fit a regulation-size tennis ball a bit too snugly so you would have to find final loads that are slightly smaller than a regulation-size tennis ball (Perhaps a medium-sized lemon or 2 3/8" balls might work). I can't comment on the "50% heavier claim" as I do not own other sets of aluminum cups but they are fairly lightweight as expected from the material used.

The crochet balls that come in this set are nicely weighted and they are 1 inch in diameter. there's not much I can talk about it.

So for anyone looking to buy this to get started on the cups and balls this a fairly inexpensive set to try your hands at it! Now you don't have an excuse to not do one of the classics in magic, who knows if you enjoy performing the cups and balls you'll be on your way to getting the more expensive cups.

If you don't know what the Paul Fox desing is, look it up or ask a friend.
Perfect for close-up and parlor.
I have performed the cups and balls for more than 40 years with aluminum cups. I never understood the omnipresent myth that he heavier and more expensive the cups are, the better. Cups and balls magic is not about the kind of cup you use. So, get these surprisingy low priced, perfectly shaped cups.
If you prefer a slightly aged look to polished aluminum, you can spray paint or engrave the cups.

they were fine for beginners, but I wanted some that were larger and heavier.