McDonalds Trade Route Mall making up their own prices

McDonalds Trade route is a complete waste really ,I drove in the drive-tru since there was no car there i was the only one in the drive-tru at 7:05 in the morning it took 11 mins to confirm a boerie breakfast bun order for R 33.50 that i order everyday at a different mcds branch for less then 5 mins where there are cars before me, i get to the pay window the cashier says the order is R 35.00 I ask why am i paying that price for a meal i bought previous morning for 33.50 he says because prices have gone up....so Mcdonalds rises the twice in one year without prior notification at the drive billboards before you buy? or is Mcdonalds trade route using thier own pricing structure..