the alternative (eGPU ) is the A500

( NVIDIA Quadro RTX A500 GPU, NVIDIA Ampere GA107, 4GB GDDR6, )

https://www.adlinktech.com/en/pocket-ai-with-nvidia-rtx-a500...

https://www.wdlsystems.com/adlink-egx-tbt-a500 ( $520.00 )