i bought it from hyper star its easily available there and possibly available at metro, i bought it for around 9-11k if i remember two years back,
theres a older manual version of this in this thread, you can see price too, both are probably more expensive now
https://www.pakwheels.com/forums/4x4-clubs-off-roaders-suv/152713-extras-your-4x4-3
these are just benchmark, its not necessary to get such product, the smaller compressors do just as well but just for long life and possible damage jack up that wheel while filling