Kaspa mining is on the rise right now but it is hard to get their asic. I found one or two in my home country but it cost almost twice

I think because everyone has an eye on this product and also bitmain is making it too.
Which ASIC miner too choose for Bitcoin Mining? according to the asicminervalue.com like you have said for now the efficient miner is S21 Hyd. but just look at their site their not gonna make the product until 2024
Model S21 Hyd.
Algorithm | Cryptocurrency SHA256 | BTC/BCH/BSV
Hashrate, TH/s(1-1) 335
Power on wall @35°C(1-2), Watt(1-1) 5360
Power efficiency on wall @35°C(1-2), J/TH(1-1) 16.0
Power efficiency on wall is low but you need to consider the watt for the radiator too