If they were advertised in store at 10p then go back to customer service for a nice profit of 90p.
While I was there a staff member was at the front door selling buckets of halloween sweets reduced to £2, she had several boxes full- with all the money going to charity. I guessing some stores may do the same rather than greatly reducing them in store for general sale.
I paid £1! (horror)
I haven’t seen one reduction on Halloween sweets in my local Redditch Extra, no doubt it crammed out back for the employee’s to take though
Aww. Crying now... ;(