After which world event, did retail establishments in the U.S. began to pursue a high-volume, low-profit-margin strategy in a type of store that sells products at prices that are lower than the typical market value and for example sells Scotsmac, an alcoholic drink consisting of a blend of wine and whisky flavouring, in 700ml bottles?
World War II
Title: Wee Beastie
Passage: Wee Beastie was a brand of alcopop, as it is commonly referred to.  It is part of the RTD (ready to drink) market and is popular in Scotland.  It was available in 275ml and 700ml bottles and was 5.4% ABV.  The 700ml bottles are labelled "Big Beastie".  Wee Beastie is owned and distributed by Inver House Distillers.  The drink is described as a carbonated, premixed blend of vodka, taurine and caffeine, flavoured raspberry and blackcurrant.  The taste is similar to Red Bull.
Title: Discount store
Passage: A discount store is a retail store which sells products at prices that are lower than the typical market value.  A "full-line discount store" or "mass merchandiser" may offer a wide assortment of goods with a focus on price rather than service, display, or wide choice - such as Aldi and Lidl; a "speciality", "single line", or "category killer" discount store may specialize in specific merchandise such as jewelry, electronic equipment, or electrical appliances, relying on bulk purchase and efficient distribution to keep down cost - such as Toys "R" Us and Staples.  Discount stores are not variety stores, which sell goods at a single price-point or multiples thereof (£1, $2, etc.).  Discount stores differ from variety stores in that they sell many name-brand products, and because of the wide price range of the items offered.  Following World War II, a number of retail establishments in the U.S. began to pursue a high-volume, low-profit-margin strategy designed to attract price-conscious consumers.  This strategy has received renewed interest from retailers and customers alike stemming from the Great Recession that began in 2007 that forced buyers to revisit the approach to the products they wanted.
Title: Scotsmac
Passage: Scotsmac is an alcoholic drink consisting of a blend of wine and whisky flavouring.  It is sold in 700ml bottles from discount supermarket stores such as Netto and Lidl across the United Kingdom.  Scotsmac has a strength of 15%.  Also known as the "Bam's Dram" or "Wham's Dram", it was once blended by D & L Ariano, imported and bottled by J.H. Wham & Son (Largs) Ltd.  It is now bottled for Accolade Wines in Guildford, Surrey.
Scotsmac Discount store