I was looking at NVIDIA RTX A2000, price seems to be about 45% of RTX A4000 from one of our suppliers.
(That is if they could deliver anything

)
It has interesting specs (a cut down/slower clocked/slower memory RTX 3060) and maybe no LHR tricks?
If one looks at stock settings, RTX A2000 performance could be about 64% of RTX A4000 at 45% price & 50% power.
Maybe RTX A2000 memory can be tweaked and still be at 75W board power.
(Info is from Nividia & Techpowerup)
RTX A2000
GPU memory 6 GB GDDR6 (memory is running at 1500 MHz, 12 Gbps effective)
Memory interface 192-bit
Memory bandwidth 288 GB/s
CUDA Cores 3,328
Power consumption Total board power: 70 W
RTX A4000
GPU memory 16 GB GDDR6 (memory is running at 1750 MHz, 14 Gbps effective)
Memory interface 256-bit
Memory bandwidth 448 GB/s
CUDA Cores 6,144
Power consumption Total board power: 140 W