around rm100 for two pairs. quality wise, i guess its okay for the price.

Anyone know online shops to get reasonably priced shoe trees?

1. Rotate. 2-3 pairs is good enough.

2. Shoe care and maintenance. Use trees, condition, change toplift of heels before they wear into the next lift, etc.

I know what you are thinking of when you say insole tak rosak. My dress shoes don't have that kind of insole that you are thinking of. The insole is a relatively thick piece of leather that is almost (almost because unfortunately , I know the difference between handwelted and Goodyear welted shoes) part of the structure of the shoe. On top of this is glued a paper thin leather cover called a sock or sock liner. Some are full length and some are half, both can be replaced.