Kobo Ireland is having an 'up to 90% off' weekend ....
https://store.kobobooks.com/p/bargai...campaign=00004
Here are the category links:
Fiction:
https://store.kobobooks.com/en-us/li...?sort=PriceAsc
(This is a mixed category because it includes: Lindsey Davis, Bernard Cornwell, Conn Iggulden etc)
Romance:
https://store.kobobooks.com/en-us/li...?sort=PriceAsc
Crime and Thrillers:
https://store.kobobooks.com/en-us/li...?sort=PriceAsc
Non-fiction:
https://store.kobobooks.com/en-us/li...?sort=PriceAsc
Kids and Teen:
https://store.kobobooks.com/en-us/li...?sort=PriceAsc
Note:
Don't forget you'll need to be signed into Ireland in order to see these deals.
Edit
Kobo UK has a similar promo, but up to 80% off and bonus points stuff as well.
Super Sale:
https://store.kobobooks.com/p/supersale
My observation is that a lot of the books are the same, in their respective categories, as for Ireland.