At present ,there are no even 555,OP Amp let alone 78XX voltage regulators locally.Most electronics vendors sell Radio,TV ,DVD,VCD accessories and house wiring supplies period.
Under the circumstances,i have improvise most of the time.To order on ebay one needs credit cards which is elitist in this part of the sun;my finances are also not the best so on two occasions i odered some components from Asia for my hobbyist pursuits.Most of the electronic components are Imitations imported from Dubai not to mention China.Most people even prefer used components from the western brands like Sony,philips ,Bush etc