I recently ordered all the interior doors for the apartment from one site and was very pleased. The choice is really big — both in stock and custom-made, different styles and finishes. Prices are quite reasonable, plus free delivery across Toronto + GTA. Here, take a look: https://triodoors.ca/interior-doors/— I took white matte ones, they arrived in two weeks, everything was well packed, no complaints about the quality. If you need something specific, the managers respond quickly.