if you need it now... yes
if you don't need it now... no

Check second hand first, I just scored a Radeon 5700 for $240 locally. Came with the original box and dust covers on the pcie slot and ports even!

Wait until the new Nvidia and AMD GPUs are out to see how that affects the market. I tend to buy every 3-4 years or so but typically not because I need to.

I only replaced my 1080 (That I bought when it came out) with a 1080ti (06/2018) because I got back from a 8 month long deployment at a bare base overseas and my friend wanted a new video card as well. I'm still using it and it does what I need with everything maxed at 2560x1440 on my 144hz gsync monitor.

Saying that I've been eyeing an ultrawide monitor and I may upgrade my 6700k to a ryzen end of this year and I don't lower my graphics settings and I don't game at 60hz so I'll likely get the newest Nvidia GPU as long as the price isn't too crazy.

Supposedly the Nvidia GPUs coming out would be 80% faster than a regular 1080 and DLSS 2.0 may be worth it if you game at high resolutions.

Main desktop video card purchase history w/ full details highest res on latest games

6/5/2018 Geforce GTX 1080 Ti 2560x1440
8/2/2016 Geforce GTX 1080 2560x1440
6/16/2015 Geforce GTX 980 Ti 1920x1200
10/29/2013 Geforce GTX 780 1920x1200
7/24/2008 Geforce GTX 280 1920x1200
5/2/2007 Geforce 8800 GTS 1920x1200
Would have to dig to see what I bought before this

Yeah, will be checking 2nd hand, craiglist, fb marketplace and etc.

Currently have a 1050ti which with a Ryzen 3700x I don't how far I would get with it gaming at 1080p.
Wanting to play games like Strange Brigade, Madden 21, BattleFront 1-2, Titanfall 1-2.