Hey!
I am planning to add an offer for my customers. They can either by my hat with its premium box(sells at a higher price) or get it at a lesser price. I have no idea how to get this done.
Hi @Haiderjc 
if the box is separate product you need a bundling(shopify has a free one) or upsell app or theme customization.
If the box is part of the core product just make the box an variant option.
Of course the option limit is changing so this depends on if a store has access to new variant limits system.
So on stores with only three variant options if the hat isn’t using all three variant options just make the box one of the variant options.
If already using all three options and a store cannot make more contact support about your use case, and or seek out a bundling app.
Hey Paul, Thankyou for your response. The box is part of the product and yes i will sell it as an add on/ variant. Now my only problem is tracking inventory. If anybody buys the cap with the box or without, i only want the inventory of the cap to be tracked.