It depends on how many LEDs are being used. Less than 50, not much.
We have hundreds of LEDs and prefer to use separate transformers from Evan Designs. Give Dave a call and he will get help you based on what your projected needs are.
Dave might be a bit more expensive than some but in all our years of using his LEDs, only one was bad and was quickly replaced. They are good people to deal with.
Hope that this helps.
