Tungsten E2 pricing question (from a newbie)

[treehugger]

Hi everyone. This is my first post on this forum. I am unfortunatly not savvy when it comes to technology.
I got a Palm E2 PDA for free about 2 years ago. At that time I had another PDA (different brand), so I haven't opened my Palm E2 from its box yet. Anyway, to make long story short, I placed my Palm E2 up for sale on Ebay a couple of days ago. I am getting bids in $190s ranges. The problem is, that looking at the box, it say "price=$199.99" and that was 2 years ago price.
I go to Amazon.com and they list brand new Palm E2 price=$599.99
So I am confused.Why will Palm's price go up by that much in the last 2 years.
The reason, I really want to know this is because I don't want to sell the wrong item on ebay at a higher price (if that is the case, off course I will let those buyers return the item, or let them back out from the bid).

Looking at the box it says the following,
Palm Tungsten E2 Handheld
Memory 32 MB
Operating system=Palm OS Garnet (V 5.4)
The box is not opened, so I assume it has everything including cords etc.

Thank you all in advance.

[Telyx]

I don't know how amazon.com would arrive at a price of $599.99 for a Tungsten E2. I'd say if you're getting bids in the $190s, take it.