Four businesses in Johor are being investigated for allegedly using the revised Sales and Service Tax (SST) as a pretext to raise prices unreasonably. <br /><br />The checks were part of Ops Kesan 4.0, launched by the Domestic Trade and Cost of Living Ministry (KPDN) to prevent profiteering.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline