Is TROFAST worth it?

[Sheeta]

Want to get some good storage for DS's room, many little toys and trofast looks perfect. Want 2-3 low units to go under his window, but can only find the combinations online.

Any advice/words on the subject?

All the individual bits are cheap, but like everything in ikea, once you've got all the bits you'd like, it'll cost a fair bit.

HELP!!!

thank you all for this - we finally have the units set up and filled with toys and the house is so much more organised now