I think Butterball
You can add a little bit of salt. Store bought butter has salt added. Though homemade is better tasting just the way it is.
What you want to ask, is how much Sodium is in store bought bread. Having said that, all you have to do is go look in the store at the bread and look at the sodium count. The sodium count is going to differ from bread to bread, so there is no real answer to this question.
All store bought ice cream has salt in it. Most home made ice cream does also.
Bats and Chickens
Sea salt may boast trace amounts of minerals that are refined out of store-bought table salt, but there's nothing that shouldn't already be in a well-balanced diet. Some impurities in sea salt (and the lack of added iodine) may actually be a detriment to your health.
Other than feathers all chickens are meat so they don't become meat at a specific time. But I think that God did decide this a long time ago and not a chicken farmers. Never heard of chickens becoming salt though but when they die they probably also return to dust with a salt content.
Kosher salt is free of iodine, and additive-free.
http://www.alsosalt.com/saltfree.html offers your solution to a salt free diet. They offer a substitute salt product or salt free recipes you can try.
Salt must be stored in sealed bottles.
KCl
The Tudors couldn't store their food. Instead, they used sugar, salt and spices to give mouldy,stale food a better taste. Also, they ate their food as quickly as they could once they bought it, to stop it going off.
Go to the store and buy it.