If anyone believes Amazon (or any other retailer) is going to rescue Walmart workers with higher starting wages, better benefits, etc., you are tragically deluding yourselves.
Hourly, non-management retail is unskilled labor literally anyone can do. That's why it does---and should--pay so low. It's like fast food or farm hand or nursing assistants, these jobs aren't supposed to pay much. .... Amazon is doing what Target does when they expand into new areas, baiting other experienced retail help into applying. Those folks get on board, and then BAM----the carpet gets pulled out from under them.
Want better pay? Get some education / voc. tech. training.