If I sell as a package, that means many of the items included are being sold at a discount so as to make the entire package more appealing to others.I have sold several guns as packages and frequently have received queries about selling the extras. So even if my ad says I will not split, if I have received good offers for the package as separated, I may take it.
If I'm willing to split, I list the items as 'if sold separately' with prices listed separately!
Selling separately can sometimes take more time and create more headaches than it's worth!