I only know about the R&G one which you can get from sportsbikeshop for about £110. edit: 10% off this weekend code is EGG10.
I did a post on my 2018 sp tail tidy , it was about £45 I recall and allows you to retain standard indicators!! Let me see of i can find it.
Here you go.........JTech tail tidy for 2017-2019 really solid and made in UK! Comes with led number plate light. R&G are ok but in my opinion these are way way better value!
I've got a evotech which are regarded probably the best you can buy posted £60 !! https://www.google.com/search?q=evo...12j0i512l4.5197j0j15&sourceid=chrome&ie=UTF-8
I have an evotech for my Panigale V4, price was a bit steep at around £150 but you gets what you pays for i guess and in this case it was the best option. Having had the Jtech for my 2018 blade, I can vouch for the quality and sturdiness to be equally as good and for the £39 its a no brainer!