As title shows, I guessed them being always-on purchase but ended up doing a rookie mistake haha! They should have perishable tag or a mention of them having a time limit 
2 Likes
Not sure why nobody responded to this, but the game actually mentions that insights expire, it’s behind the “Explain” button:
it should have a tag for this dont you think? hiding it behind a button makes it less convenient imo.
2 Likes
at madam madame shop if you read the usage of the thing
you will see that it stays for 24h only
it doesnt say on explanation part, you need to press explain to see that, I believe this should have a tag in madame shop and in inventory.