$1.
It's not real gold. The Mint never struck any Ikes in gold. Your coin has been plated by a private company and sold as a "collectible". Unfortunately that makes it an altered coin with no extra value. It would cost more to remove the gold than it could be sold for.
The U.S. stopped issuing real gold dollars in 1889, and they were tiny coins smaller than dimes. A gold coin the size of an Ike dollar would be worth hundreds for its metal value alone.
As far as the so-called "golden" Sacagawea and Presidential dollars now being released, they don't even contain an atom of gold. They're made of brass.
The plating adds nothing to the value of a dollar coin, unless someone wants it.
The gold plating adds nothing to the value of the coin and has no collectible value at all unless you find someone who wants it.
Face value only.
Check that coin again. Eisenhower was on a large dollar, and Kennedy is on the half dollar. Either way, a circulated specimen is worth face value.
Eisenhower was on the one dollar coin, not the half, and they're worth one dollar.
One Dollar
1 dollar, but I have seen flea market dealers trying to get $3.
A numismatist who collects coins.
Check that coin again, because what you described doesn't exist.
One dollar.
Eisenhower was only on dollar coins made from 1971-78. Check to see if you have the correct denomination.
Sacagawea dollar coins are common and worth face value.
There are numerous places to buy the Eisenhower dollar. A reputable site to buy them in large quantities is apmex which is a website online that sells the Eisenhower dollar at competitive prices as well as other prices.
This is a 1 ounce gold bullion coin. The value is tied to the spot price of gold at the time of sale. Now it's $1,236.30 per ounce, this is the approximated value of the coin.
About $4.50 for the silver. The gold plating adds no value and collectors will view it as damaged. However, a 1967 half dollar is 40% silver and is a common date only worth silver scrap.
A few cents or a dollar at most. Such coins are not collectable, they are not produced by the US mint. Gold plating adds only a tiny bit of gold to the coin, not enough to add any value to it.
This coin and the coins mentioned in the alternate wordings don't exist. President Dwight D. Eisenhower's picture appears on all U.S. dollar coins minted from 1971 to 1978.