Preston University MBA added to list of UAE MBA colleges. Preston University is in Ajman and also offers an Executive MBA. When did Preston University start offering MBA programs? The MBA takes 4 quarters (presume that’s 1 year) and costs AED 19,000. The EMBA takes 5 quarters (1 1/4 years?) and costs AED 22,500. Seems quite cheap for an MBA. Are they any good?