I generally only buy one container of a particular aftershave at a time. But there is one AS that I always make sure I have at least 3 containers in reserve...mostly because I can't imagine a shave with it -- Lucky Tiger AS splash. Vintage Old Spice is another that I buy whenever I find it in an antique store. You just can't have too many bottles of vintage OS (many are only partially full).
Is there any AS that you buy in bulk or keep a reserve of a few bottles?
Is there any AS that you buy in bulk or keep a reserve of a few bottles?