Probably still one of the best options for the money, but fairly risky.
NOTE: AFAIK the 5090 96GB are FAKE, do NOT buy them. Beware of scammers!

You can find these GPUs easily on eBay or Alibaba for solid pricing, the ones I know of are:

• RTX 2080ti 22GB
• RTX 3080 20GB
• RTX 4080 32GB
• RTX 4090 48GB

I myself own 2x RTX 3080 20GB and am very impressed with the results, they are real, and do exist, but don't have working ReBAR support (although a fix for this is discussed here, this majorly affects tensor parallel setups (multi-gpu), I highly recommend this tweak).

The performance I get seems right, about 80tk/s under heavy context load on Qwen 3.8 27B using this quant with 256k ctx and vision enabled (with MTP).