The best thing to do is shop around. We have some good sponsor sites, I just open all of them and see who has the best shipped price on what I want. High Gravity has $9.99 flat rate shipping, even on kits, so I've actually ordered two at a time from them. But they're getting rid of that shipping at the end of the year. Even so, they have a large number of kits. FVW has better prices on some kits vs HG, I bought my first En Primeur kit there (at the time $10 per kit shipping, pretty good), and B&W has better prices on some as well. I could not find a better price on Eclipse kits than what Doug at Brew & Wine supply has. Currently shipping $10 per kit as well I think.
So truthfully we have an abundance of good deals with the forum sponsors, and probably plenty more out there as well.
Just open a tab to all the places you want to check and compare.