Not all packages are created equal, so it is hard to give a categorical "aye" or "nay." If there is an economic incentive, then it seems like a good idea. ForresterModern's comments, however, are an important consideration in terms of location and the real cost of a package that must be shipped internationally.

The other consideration is if everything in the package is actually desirable. If so, then it seems like a good idea. I am somewhat leery, however, of the idea of a package and the potential to end up looking like a cookie cutter kiltie. If someone was looking at a package as a way of facilitating their purchase, there is a real danger of looking like a one is wearing a rental outfit. For me, part of the joy of kilt ownership is putting my own personal flare into it. As RockyR said many vendors might allow upgrading of individual items.