Current Stock Minus Committed stock = Available quantity
Example 24 - 0 = 24 available
176 ETA = More arriving by 12/5/2018
An assortment is a predetermined selection that may vary in colour, size or content and is reflected in the minimum order qty (and therefore the price is for each individual item). For example, below is an item that comes in 2 assorted colours. Therefore, the minimum order quantity is 2 in which you get 1 of each colour, and the price is $40.00 for each of them.
A set is what you will receive when you order a quantity of 1. For example, below the stools come as a set of 3, meaning you will receive all 3 sizes in 1 unit and the price of $114.00.