@engineer,
I'm, afraid of the used products as if I have a problem where would I return them - I think I'll play it safe and pay full price.
It looks like I can get some deals on the games here and there though.
I also checked with my SIL - as her daughter has one of these - that is how my daughter came up with the idea. She has the DS - without the i and all the bells and whistles. I figure the difference in price of $40 isn't worth it as my daughter's focus would be on the games. Although she might like the taking pictures part.