Better than a supermarket cashier, just
Hours are very variable for new hires, sometimes 40 hours/week, sometimes 10. Often called in on same day. If you need to rely on this for money to live it may not work for you. No benefits, poor training, zero career guidance if you decide you like the work.
If you are doing it as a seasonal job (Xmas, summer, etc.) the hourly wage is above average, just, but you need to work Fri, Sat, Sun to qualify.
The work is as boring as it sounds - cash, stocking, etc. - everyone does a little of everything but new hires will be mostly on cash.