Nintendo hasn't announced any pricing information yet, but pricing from these sites ranges between $300 and $500.
Some of the more interesting information we get regarding new consoles and games comes from the listing of the items on foreign websites including the notoriously leak prone Amazon.de. Prices have been set across the internet, but if they're to be believed at all, it looks like we can expect a higher price point than many expected for Nintendo's new console.
Amazon UK set the lowest price for the system, at 199 British Pounds, or just over $300, meaning a price of $299 for US consumers. All other postings have been above that amount, including the most recent from Amazon.de which put the cost at 399 Euros, or right around $500 USD.
Source: Games Industry.biz