I suppose, then, you could take my comment as support for progressive taxation, lol!
Then call in the IRS because you know grandma isn’t going to add her profit from the dinner to her reported income. If she does the same for Christmas and birthdays, she’ll eventually max out and there goes her SS check.
$30 a plate? Granny is raking it in. $30 is my entire dinner budget - big 23-25 lb turkey, giblet gravy, cornbread dressing, rolls, sweet potatoes, corn casserole, salad, cranberry sauce, tea, pecan pie and pumpkin pie.