I've considered working with OpenERP and looking at becoming a consultant in it (ERP is $$$ and very useful), but last I checked the OpenERP site (2? years ago?), the demo site was half broken. Glad to see it's gotten a refresh and a genuinely web 2.0 name. ;)
Apparently the devs have churned it into a SaaS offering, which is also very cool.
I installed OpenERP some days ago, just to see what it had become. I found it nice. Even though I think you would still need to be really documented on how to use the different modules.
I know SAP and Oracle Fees are high, simply because its quite hard to get opportunity to work on it, and all the certifications. So there aren't that many people around.
I wouldn't say it's hard to get an opportunity to work on it. The demand is high (which is why the fees are high).
Being good at it is hard, the certifications are sort of meaningless. You need to know a lot of different things, and it's very challenging to have the comprehensive toolset needed.
Well, I'm not sure what the rate is. But I know that it supplies a very valuable service, and other things in the space are very lucrative. I imagine that part of the lucrativity is the value that it provides to businesses.
Apparently the devs have churned it into a SaaS offering, which is also very cool.