Vaq/FLY:
If I recall correctly, Precision (pulselite mfg) has various pricing levels hence the reason to call. I recently put a system on a small plank wing (250W) and the kit was $400 or so with shipping from aircraft spruce on this side. When checking on prices saw the latest version (500W) at around $2000. However, I seem to remember when we started upgrading the fleet at my former day job, Precision offered great discounts and we bought them by the case.
W1