Hi, many of the shave soaps sold as 'end of line' on ebay recently from around 2011 are genuine factory closure stock.
I've sold alot of these, all mine have fresh fragrances, properly stored and kept in a dark, dry and cool place sealed and in sealed containers- which is why i don't have any problems with quality or fragrance.
No pucks should loose their fragrance if stored correctly, i have a couple of ebayers in the past buy larger volumes from me cheaply to sell on, some sellers will have also purchased them directly from the factory as i have, if those have been stored incorrectly, they would definatlely loose their scent and become dry. That would apply to any soap, factory sealed boxed or unboxed.
Even my own soaps for personal use are kept wrapped & in sealed containers.
Some fragrances are milder than others- i have a Eucris which nearly knocks your socks off when i open the container! it smells like the whole of the UK is having a shave in one place
the Rose also has quite a strong fragrance , the coconut has a much milder coconutty scent. Sandalwoods a subtle distinctive typically Sandalwoody scent.