How much is my vintage computer worth?

[GamerMan101]

I have an old pair of vintage HP Vectra computers. They are both of the VL/200 series. They have some mild fading on them, (see pictures) and I have replaced the CD drive in both of them. They work fine though, and have been thoroughly tested and preloaded with Microsoft Windows 98 Second Edition. What I would like to know, is how much I could sell these gems online for. One of them is missing RAM, so it would be sold as is or for parts. Even without the ram, I still want a realistic price range for these.
Also, I might throw in a vintage fatty style monitor that I have. Thanks guys!!
If you are interested in retro technology and will be upset with me for selling these, it is so I can get money for other projects and such.
They both have an Intel MMX processor. (images from CPU-Z soon!)

Side view of computer:

Front view of computer:

Thanks again!!
Front image:
http://
Side of computer (with model no.)
http://

 

[USAFRet]

Basically, $0.
Unless you find that one guy who wants ancient parts.

 

[Ne0Wolf7]

USAFRet is right, but what you can do is set them up for some folding
http://www.tomshardware.com/news/protein-folding-tomshardware-anandtech,33051.html
A little competition and a chance to help out