I think we were both right.... apparently, this whiskey is in high demand, and the year it was bottled is "important", regarding price. You likely had the 18yr old, bottled in 2017... hence the 17 year...
Those 2017 versions are pretty pricey.... the $2000 ones.. I found one 2017 for $700, apparently, a "bargain"....
You can buy 18yr olds bottled in 2023 for quite a bit less...
edit... I read a review of a 2023 bottle.... made me laugh out loud.... the flowery descriptions of all the flavors, and hints of flavors that start out, then are replaced by........ good grief... funny, pretentious stuff...