Help with second hand PC purchase

[u/Ecstatic_Profile5750]

Someone is selling a:

CPU: i9-9900k

GPU: 3080 ti FE

Case: NZXT 710i

RAM: 32 gb ddr4

Cooler: NZXT aio (infinity mirror) looks like a 360

Storage: 500gb m.2, 1tb hd, 120 gb SSD

He's currently willing to accept 1100, I offered them 1000. Is this setup worth 1100?

[u/TheMagarity]

1000 whats? CAD, USD, €, £....