The issue seems less the boosters who are paid to shoplift than the operators moving the goods online profitably enough to hire an army of thieves.
Why not hire competent investigators to infiltrate and bring down this new model of highly profitable criminal operation (pay boosters -> warehouse goods -> move product online)?
Instead all ya got is lOcK Up TeH BooSterS?
Here in Maine, our max fine of $1000 and/or a jail sentence of up to 180 days for theft sounds about right, but in turn I'm supportive of efforts to lower the local incarceration rate: https://www.prisonpolicy.org/profiles/ME.html