Chelation can make it easier for the body to absorb magnesium. Magnesium used in dietary supplements can be chelated to any number of compounds. Often, these compounds are amino acids. Such chelation imitates the natural form so that the body can absorb it readily. Naturally chelated magnesium is found in substances such as chlorophyll, the chemical that gives plants their green color. This is why leafy green vegetables are a good source of magnesium.
The dealer invoice is the price the manufacturer bills the dealer for the vehicles they purchase, plus any options equipped. This is in essence the dealer's cost, and is not generally shared with the customer.he dealer invoice is the price the manufacturer bills the dealer for the vehicles they purchase, plus any options equipped. This is in essence the dealer's cost, and is not generally shared with the customer.
Very popular models sell for MSRP (sticker price) and sometimes even more. If there are quite a few sitting on the lot the dealer becomes much more flexible. Invoice is a fictitious price the factory makes up which is supposed to represent what the dealer pays for the car.