So you are selling cheap inefficient use of power in an expensive immersion cooled setup. Much marketing, less hardware.
Roadstress sp30 offering:$0.88/gh 0.5w/gh $0.15/kwh (starts hashing in a few months)
Datatank offering: $0.93/gh 0.6w/gh $0.025/kwh (starts hashing in a few weeks)
0.6w/gh is not inefficient and <$0.5/w for cooling is not expensive.