Where can I get the Lenovo Thinkpad E555 for the cheapest?

I see it around for around $400, but I was hoping to find the site or store where I purchase it at a lower price.

I saw the laptop on walmart s site for $329.99, which caused me to question if it was of good quality.

Thanks!
Added (1). I see it around for around $400, but I was hoping to find the site or store where I purchase it at a lower price ( below $400 would be preferable)

I saw the laptop on walmart's site for $329.99, which caused me to question if it was of good quality. Does anyone know if it's the real deal?

Thanks!

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