Multiple Sales linked 1 Stock Qty on Hand

My company sells a Product but that same Product is sold with 5 different Sales Price.

The company has set up 5 different Bundles so that it has its different Sales Price when raising invoices but this means the company now have 5 different Stock Types for the same Product.

By doing this the 5 different Stock Types leads to 5 different Qty on Hand for the same Product.

We would like to see these 5 different Stock Types linked so that QBO shows just 1 Qty on Hand as they are the same Product. This is important because the purchase of Stock increases against this 1 Product helps for reports to work out the Cost Price and to calculate the Avg for FIFO purposes.

I cannot see if this is available within QBO so I am hoping that there is a stage that has been missed when the Stock and Products were set up.

Can you advise what I can do to make this possible?