From some dude 😅, but I think a nice option currently could be this:

https://miningwholesale.eu/product/bitmain-antminer-s9/

You probably need a power supply as well

https://miningwholesale.eu/product/bitmain-1600w-power-supply-apw3-10-pcie-connectors/

(I have no experience with this page, just did a quick research, there are potentially others around as well)