At 12pm ET this afternoon, the US Mint will be releasing a limited edition American Eagle 2018 One Ounce Palladium Proof Coin. The mint will only be releasing 15,000 of these coins and there is a purchase limit of 1 per household. The cost of the coin is $1,357.50.

These seem to be selling on eBay for about $1800-$2000.
I don’t really have any experience selling these on eBay, so I don’t know the possible pitfalls involved, but if you are able to flip these on eBay, this looks like a quick and easy profit.