Actually, for basin cabinet in bathroom, you can buy the ready made.

For wardrobe, you can approach those kitchen cabinet suppliers, they also do the wardrobe. I got a cobe for 10' tall melamine chipboard cabinet, roughly RM 350 - RM 380 per foot run. Most of these wardrobe have standard depth. So, the pricing is like kitchen cabinet, per foot run.

As for TV cabinet, again, actually you can buy ready made.