The kit price has turned me off of those. When someone can buy one at any gift shop for less than what I would pay for a kit, it's a pass for me.
I bought a half dozen and made my wife the first one to try out. I've not seen it since giving it to her. Mt finding is that, if the table top is thin enough it will work and if the lady takes the time to dig it out of her purse she may use it. That said, I was told a long time ago by a wise man, "Never dampen the plans and dreams of another. You do not know their strength and determination".
WB