I love those albums and wholeheartedly recommend you get the £2 one as well.
Going through the 50p's in the shop, I have a Victoria Cross medals you can have and I definitely have duplicates of the four minute mile, Paddington at the station, and the last five, but I will double check after work.
Good luck with the rare ones, never seen a Gruffalo in the wild (pun intended), nor a Snowman and only once a Kew Gardens and that disappeared into one of the Staff's pockets in double quick time.