1833 isn't a particularly rare date for US large cents. Numismedia lists the following approximate retail values as of 02/2011:
Very worn condition - $24
Moderately worn - $35
Slightly worn - $68
Almost no wear - $280
Uncirculated - $420 to $1,910 depending on quality
DISCLAIMER: The retail values quoted are the best available as of the date shown, but may vary significantly due to changes in the numismatic market. Also the wholesale (buying) price of a coin will be less than the selling (retail) price. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.