  It is well known that the resolvent of the free Schr\"odinger operator on
weighted $L^2$ spaces has norm decaying like $\lambda^{-\frac{1}{2}}$ at energy
$\lambda$. There are several works proving analogous high-frequency estimates
for magnetic Schr\"odinger operators, with large long or short range
potentials, in dimensions $n \geq 3$. We prove that the same estimates remain
valid in all dimensions $n \geq 2$.
