Agree, brite tap seems expensive for what it is.
And personally I went for a food grade bucket, I just figure they should have food grade. Less than $5 from Lowe's.
I got horizontal nipples on eBay and though I never had Brite Tap, I feel they would work better
~$17 on Amazon here for 5, kinda expensive but it worked for me
http://www.amazon.com/Horizontal-Side-Mount-Poultry-Nipples/dp/B00JXUAD0K
Or you can get them on eBay from the same seller for about $20 for 10 instead of 5. About $3 more for twice as many. Better deal but I didn't discover the eBay posting until the other day and I like Amazon.
http://m.ebay.com/itm/10-Horizontal-Side-Mount-Poultry-Chicken-Watering-Nipples-/161294582526
So about $5 for a 5 gallon food grade bucket and let's say $20 for the nipples so about $25 for the whole set up. WAY WAY WAY cheaper than the Brite Tap, just a bit cheaper (and easier to drill into) than a cooler, and you can put as many nipples into it as you want to i have 4 in mine.
I just checked on ebay and they have 5 nipples for $12.94
http://www.ebay.com/itm/161294591700 or one can go directly to their website
www.allaboutchickens.com They have buckets as well though I didn't check the prices for those as I believe one can get them else where cheaper and just drill the holes. If you have friends that work in the restaurant/fast food industry ask them if they have any 5 gallon pickle buckets. Just make sure to wash it well and use a little bleach to disinfect it.