2080ti was launched same time as 2080, within a week. And announced at launch. I bought the 2080ti with confidence it wasn't going to be superseded. I hope I can do the same this gen.
My 2080Ti arrived September 29th 2018 and cost me £1090.
That means it has cost me about £47 per month - which is what some people pay for a mobile phone contract for 2 years.
I've tried to do a quick calculation of game-time on Steam/Gamepass/Epic Store etc since 1st October 2018. I don't multi-task when playing games so this will be pretty accurate.
Steam
Hitman 2 - 163 hours
XCOM Chimera Squad - 73 Hours
Horizon: Zero Dawn - 65 Hours
Sekiro: Shadows die Twice - 49 hours
Resident Evil 2 - 33 hours
Shadow of the Tomb Raider - 31 hours
Resident Evil 3 - 26 hours
Metro Last Light Redux - 14.2 hours
Metro 2033 Redux - 12.5 hours
Half Life: Alyx - 10 hours
MS Gamepass
Gears Tactics - 40 hours
The Outer Worlds - 29 hours
Ori and the Will of the Wisps -15 hours
Wolfenstein Youngblood
Gears 5 - 14 hours
Crackdown 3 - 17 hours
Forza Horizon 4 - 80 hours
Streets of Rage 4 - 4 hours
Epic
Borderlands 3 - 34 hours
Control - 22 hours
Rebel Galaxy Outlaw - 21 hours
Observation - 6.5 hours
Origin
Battlefield V - 20 hours
Star Wars: Jedi Fallen Order - 23 hours
Bethesda (guestimates)
Rage 2 - 15 hours
Doom Eternal - 15 hours
Other
Red Dead Redemption 2 - 52 hours
894.2 hours - Lets call it 900 with some VR gaming on Boneworks, Arizona Sunshine etc.
So for the GPU, that's £1.21 per hour of gaming. I'm ok with that.