I've heard plenty of stories with it happening from the rainforest site.
Even happened at work not long ago.
Ordered 4x 2TB SSDs... went to plug them in in the middle of the night and one was reporting as 120GB. Took it out... it had a 2TB sticker on it but it was rough around the edges... looks like someone's done a swap and sent back their old SSD with a new sticker attached.
Those were just underclocked SSDs to make them last longer!