Have you tried a Chinese travel agency, like one in Chinatown, Markam, or Scarborough? As mentioned previously in my other posts, flights to HKG, TPE and China are sold to these agency at a discount. These agency need to sell a minumum number of tickets (usually thousands) to get a discount contract from an airline.
The tickets are usually then sold to consumers at a discount. Some examples from my previous travels to TPE: Canadian Airline from YYZ-YVR-TPE, free stopover, B fare, regularly around Cad$2000 direct from airline. This is available at $1050 in Chinatown. Being B fare, this is eligible for upgrade using stickers.
Another example from my last travel in November, YYZ-SFO-TPE via United Airlines, M fare (MLXPX1), regularly priced at Cad $2209. It was available at $990, all taxes included.
This is like a consolidator price but rules follow the original undiscounted fare rules. So they are changeable, reroutable, and allow open jaw / returns. Give them a call, you might be surprised.