is buying used Obi100/110 a good idea? is installation process the same?

[TimSpencer]

is buying used Obi100/110 a good idea?(i.e eBay/Craigslist/etc)

is installation process the same?  or will I run into difficulties trying to configure a previously used unit?

thanks!

P.S.  I already have one Obi110.  I like it very much so I'm trying to buy another one at a lower cost. 

[CoalMinerRetired]

See recent post and answer here: http://www.obitalk.com/forum/index.php?topic=4779.0

But I want to add, a new Obi100 or Obi110 is about $40, via Amazon you get free shipping, and no tax if it ships to you from another state. So what are you gonna save via eBay, $5 or $10?