The 1999 Proof Gold Eagle experienced higher sales levels across each product option. The increased interest was driven by higher awareness of the safe haven offered by precious metals ahead of Y2K, rising market prices for gold, and possibly the fact that these issues would represent the last Proof Gold Eagles of the millennium.
The United States Mint began accepting orders for the coins starting on April 30, 1999. Price levels remained unchanged from the previous year, although maximum mintage levels were altered slightly. The one ounce proof coin saw its individual limit reduced, while the one-tenth ounce coin had its limit increased. The other individual options and four coin set remained at the same limits established in the previous year.
After six weeks of availability, sales had reached around 50% of the maximum for each option, well ahead of prior year sales levels. The United States Mint alerted customers to the strong possibility of a full sell out before year end.
Sales had reached two-thirds of the maximum levels by late July. In November, the one ounce individual option sold out. This was closely followed by a sell out of the remaining individual options, and finally the four coin set. Excluding specially issued sets, this represented the first time that Proof Gold Eagles achieved a sell out.
1999 Proof Gold Eagle Prices, Limits, and Sales
| Product | Initial Price | Product Limit | Mintage Limit | Final Sales |
| 1 oz. | $570.00 | 8,000 | 33,000 | 7,956 |
| 1/2 oz. | $285.00 | 7,000 | 32,000 | 6,956 |
| 1/4 oz. | $150.00 | 11,000 | 36,000 | 10,946 |
| 1/10 oz. | $70.00 | 25,000 | 50,000 | 24,957 |
| 4 Coin Set | $999.00 | 25,000 | N/A | 23,471 |
1999 Proof Gold Eagles For Sale
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 1999-W American Eagle 1/10 Oz $5 Five Dollar Gold Proof Coin PCGS PR69 DCAM $210.00 Time Remaining: 2d 34m |
 1999-W $10 Gold American Eagle PCGS MS-67 Mint Error Stk w/ Unfinished Pr Die $1,599.99 Time Remaining: 15d 2h 6m Buy It Now for only: $1,599.99 |
 1999-W PCGS MS 69 American Eagle $5 Gold Coin - Unfinished PR - G1S kf236 $1,200.00 Time Remaining: 27d 3h 59m Buy It Now for only: $1,200.00 |
 1999-W American Eagle 1/10 Oz $5 Gold Proof Bullion Coin PCGS PR69 DCAM $215.00 Time Remaining: 2d 1h 31m |
 1999-W $10 Gold American Eagle PCGS MS-68 Mint Error Stk w/ Unfinished Pr Die $1,699.99 Time Remaining: 15d 2h 5m Buy It Now for only: $1,699.99 |
 1999-W $5 GOLD EAGLE 1/10 Oz. NGC PR69 PROOF PF69 SCARCE DATE ! $299.00 Time Remaining: 28d 10h 31m Buy It Now for only: $299.00 |
 1999 W $5 GOLD EAGLE NGC PR69 PROOF PF 69 $215.00 Time Remaining: 10h 12m Buy It Now for only: $285.00 |
 1999, PCGS-PR-70DC, $10 GOLD EAGLE, *BETTER KEY **$1350 $1,075.00 Time Remaining: 3d 10h 8m Buy It Now for only: $1,075.00 |
 1999-W US $5 GOLD 1/10-OZ EAGLE SUPERB GEM BU MS MINT ERROR PROOF PR DIES RARE $799.99 Time Remaining: 18d 10h 45m Buy It Now for only: $799.99 |