Can’t believe i spent $654 on my domain name

Hi,

Last night someone was taking the piss to the max in bidding on a domain name i wanted. sadly they pushed the bid to $654. I still think it was worth it since its a .com domain which i already owned the .co.uk version of the name. 2 months ago someone on 123 reg was trying to sell the domain name for £5500 until the domain name expired and dropped.

is a domain name with 5 letter word worth the price i paid? and its a 17 year old domain