MAP Camera same camera 2 prices

Hi, I am surfing mapcamera.com, and they have 2 prices for the same camera.

中古=cheaper, with 6month warranty

新品=much more expensive.

What's the meaning of 中古 and 新品?

Thanks.

中古 = used/secondhand goods

新品 = new items.

Does this mean that people sell their old cameras to MAP?

Or are the "old" cameras those that are returned to the store after some days for a refund?

Is there a refund policy in Japan, meaning if I don't like a camera I bought, I can give it back within a few days?

many photographers, including me (an amateur not a pro) routinely trade in their old camera when buying a new one and get a discount on the new one, just like one does with a car. . Obviously it only works with good quality cameras. This is done in many countries.

I was looking for map camera today but couldn't find it. i found odyaku halc/bic at the jr station west entrance. is map nearby?

Map is in Shinjuku, west of the JR station

Map of MAP
http://www.mapcamera.com/shp/