Thanks Bob, what does this mean? "have a catalogue with a search heirachy"
Perhaps inventory is a better word.
I mean that if you sell food and drinks then you click on food and it shows Eggs Benedict, bacon and eggs etc and if you click drinks it has corona, juice etc.
It saves having everything you sell listed in one giant list.
Then you can also get a total for food and a total for drinks.
I needed that I was selling for a number of artists and you need to know a total for each.
It may not be necessary for you.