why pay more than sale price? can't you just order from the mint?
Current purchases are back-ordered at least a month. Some collectors/people are willing to pay premiums to get them earlier.
Not this specific one, but other specialty coins released by the mint have limited amounts made.
Also, each "household" can only order 5 coins.
An initial inventory of 40,000 coins will be available for sale on August 5 through various sales channels. The United States Mint will evaluate sales activity during the first week and make adjustments to its production schedule accordingly.