how would I use table.Add to make a table like this?

I’m trying to make a player-run shop for my gamemode and I wont to make a list of the things people are selling. I have the list down, all I need to know now is how to make a table so it can get the things people are selling. I want something like this:
[lua]Sales = {
Item = “some item”
Seller = “minge”
Price = 100
but with table.Add, is this even possible? Also, here’s how I plan on adding them to the list:
[lua] for k,v in pairs(Sales) do

[lua]table.insert( Sales, { Item = “some item”, Seller = “minge”, Price = 100 } )[/lua]

thanks a ton. how could I have missed that on the wiki?