@orange
Yes I'm sure you can (and that will get you a lot of other things too. But does that second hand unit come with a warranty and tech support? Not everyone that wants to get on the net is a tech savvy hacker or tinker. Just think about all the people that bought MSNTV (formally WebTv). Sometimes to many people, the pricetage of buying something new comes with the assurance of help with the product if they need it.
(BTW would that PIII be a p100 or a p133)