In all seriousness, it really is difficult to say a trick is either good or bad. It is a personal thing. And some performers can take a piece of coal and create a diamond.
But there are some routines that seem to consistently find their way into performers' repertoires. Card-to-wallet, coins across, chop cup.
I don't understand what you mean by this:
It is not a trick for you, I suppose. You only want tricks that can earn you money. This one won't but it is a damn good trick to do simply for fun.
The tricks I choose to create routines around are ones that hopefully entertain and mystify. It doesn't matter who is watching. Some routines lend themselves to certain audiences, but I don't think whether someone is paying you to perform makes such a difference.
Personally I think a good trick is one that can be retold to someone who didn't see the performance in just a few words and still sound magical. Of course there will be exceptions, but most of the stronger routines pass this test.
"my signed card magically appeared in his wallet!"
"the coin disappeared from his hand and ended up in mine!"
"he lifted the cup and there was a real lemon under it!"
"I chose any word on the page and he knew what I was thinking!"
"he pulled the scarfs out and my bra was tied to the middle!"
There is a definite lack of wow in the re-telling of Sack's Dice Routine. It just doesn't sound impressive.
And I have seen several magicians perform it and not been impressed by any of them. Including Sheets, who I admire greatly as a performer. I haven't seen you perform it, but you are the sort of person people like to watch no matter what you are performing. That doesn't mean the trick is any good!
I have played with the trick myself, but I honestly can't remember if I tried it for real people. I went through thousands of routines when I worked restaurants, so I am sure I did.