This isn't quite what you're looking for, but check out micromatic. Google is your friend. They are regarded as having the cheapest, yet good quality, new regulators on the market. If you want to buy a full kit at a decent price, kegconnection has what you're looking for (once again, google is good).
That said, you can save a ton of money by switching to geico or getting used stuff, it just might take awhile to piece it all together.