Prices of graphic cards are going crazy, should I buy a second card though?

A few months ago, I bought a RX 7900 XTX 24g to start toying with local LLM, at 900€ new. Little I knew that now I want to add a second card to my rig, but prices have gone insane! Adding a new 7900 XTX would cost me 1200€ as new now, used price is around 900€ now, and the last budget option would be going for RX 7900 XT 20g at 700€ best, which is still quite expensive for old cards.

Nvidia cards are through the roof, but as my setup is RNDA 3 I should go 7900 XTX or XT to keep llama.cpp happy with either vulkan or rocm, as mixing tech does not seem so great, did someone get great results with AMD RNDA 3 2 card setup so it is worth the price even with only PCIE4x?

There isn't a lot of great options for price to vram cards, and nothing is made to solve the shortage of such cards, that maybe I should just buy the bullet and spend while I can still find AMD RNDA 3 cards new on the market, did you also have the same dilemma?