Thanks for the helpful response, I appreciate it.
We have 7 child ASIN’s under the parent, yet some of the child ASIN’s are indeed, in different main categories, but the same sub category, which is also very strange. However, there are instances of the exact same variation being charged a referral fee of $1.05, then $0.56, so it really isn’t constant. Another thing worth pointing out, and I am not sure if this is even relevant, but the item is in the small and light programme.
Certainly a strange one and an issue that I am finding hard to find a fix for. I want to change the category of the items too, so that they are all in the same ones, however, I cannot find the node ID in the guide for this particular product, which makes the whole process even stranger.