Can I have the pricing engine display a default value of any quantity other than the lowest quantity when it is first initiated? I have range of quantity between 0 and 999999.

The Pricing engine shows the first number entered for the quantity in the pricing engine sheet. So if you would like to set the default quantity to any quantity other than the lowest quantity, you need to list that quantity first and then other quantities. For example if you would like to show 5000 as the default quantity then you would need to list 5000 first and then the other numbers in the quantity section of pricing engine worksheet. This will default the engine to show 5000 even if you switch from a drop down to a field to enter the numbers.