Question regarding local J2EE WAS in JDI

Dear Sirs,
We are considering implementing JDI in our system landscape. In the JDI papers you are advised that every developer has access to his/hers WAS on a local PC for testing purpose.
There are however a few downsides with this; you can download the slim edition (Developer Workspace) with a 90 day trail period, and then you have to start paying a license. How big is this license? (guess I'm told to contact my local SAP office, but it will be interesting to know a rough estimate. Are we talking 100$, 500$, 1000$, ...)
In addition running a WAS on the developer PC, requires a lot from the developers computer.
How does people overcome the challenges of running a local WAS? Can an alternative to a local WAS, be to install a “separate” WAS, which acts as a local WAS for the developers?
The way I see it there is a need for a place where developers can test more freely than in DEV, and this way reduce the number of activities on the CMS.
Best regards,
Jørgen

Hi
An additional input on the central server for development , I think if you add more server process , then you get more ports to debug on thereby isolating a debug sessions between developers.
No of simultaneous debug session = No of server process?
Just a theorectical guess..
On the confuguration side , I use a 1.6 Ghz Pentium M processor , with 2 GB RAM and its okay to develop Portal components and not so heavyweight webdynpro comps. But putting mods on to some of the ESS comps really slows it down.
The new Intel Core Duo processors with 3-4 GB RAM I heard is like lightning fast ...!!!
Regards
Pran

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    http://support.apple.com/kb/HT2559
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    http://macperformanceguide.com/
    http://www.macgurus.com/guides/storageaccelguide.php
    http://www.macintouch.com/readerreports/harddrives/index.html
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