That all depends on what size motors you will have, also type of drives will play a part. Switch mode power supplies are not recommended for a lot of drives, Geckos being one. Most drives like unregulated transformer style power supplies and you could probably build a nice one for around that price or not much more. and I would think certainly cheaper than the BIN price. One other thing is the voltage is only 24V, depending on the drives you have you might be better getting a higher voltage.
Hood