I use brassbadger.com to alert me when my local Walmart receives a fresh supply. Same prices as before the "scare". Win M-22 1000 rd box is about $50. WWB 333 rds is $17 and change.
I've been fortunate to accumulate about 13,000 rds over the past several months of various brands and round count. Still can only buy 3 boxes per customer, but my wife is usually with me so we can double up.
My son and daughter enjoy shooting pistols so it won't take long to go thru my cache. They can go thru several hundred rds in a Sunday afternoon.
P.S. - the Dick's Sporting Goods local to me have been selling the Remington 1400 rd buckets for $70, but that is 70 miles away. You need a Dick's reward card ( not to be confused with a credit card ) to get them.