So I have new products to add to my store - they are rash vests and shorts. They can either be purchased as a set or separately. Buying as a set will make them slightly cheaper.
I began adding a variant for the rash vest (1) and the shorts (2) but also want a variant which is the set (3). If I dis though I will be duplicating my inventory. Is there a way to link sets so you only have one set of inventory for each product but a different price if purchased together?
Sun Safe Kids (Australia)
I also struggled to find a way to sell sets/bundles within Shopify's basic framework. It is possible to create a set/bundle where your customers can select a variant of your vest and a variant of your shorts. The problem is that, like you stated, your inventory will not be accurately updated when a set/bundle is sold, because Shopify sees the set/bundle as a unique item instead of a combination of two individual items.
There are some paid apps available that claim to be able to sell your sets/bundles while accurately tracking your inventory. Disclaimer: I haven't used any of these apps so I cannot speak to their quality, accuracy, flexibility, etc. There may be similar apps out there, too.
For my store, I ended up creating my set/bundle without an app and I manually adjust my inventory quantities after the sale. I don't really like this workaround, but I decided that it wasn't worth it for me to pay a monthly fee.
I hope you are able to find a solution that you can be happy with.