What is the value of an 1889 US gold dollar?

1889 was the last year that $1 gold coins were made for circulation. About 29,000 were struck, all at the Philadelphia Mint.

Numismedia lists the following approximate retail values as of 12/2009:

Very worn condition - $125

Moderately worn - $162

Slightly worn - $225

Almost no wear - $250

Uncirculated - $335-4800 depending on quality