I've had good sucess with pyqt in a commercial setting. We paid a student programmer to develop our application and he had good Python but little pyqt/qt knowledge. We were able to develop under Linux and deploy to Windows with minimal compatiblity tweaks and in short time. Buliding an installer that bundled python/pyqt etc. was easy.
We used pyqt3 for which you could buy a pyqt-only commercial license (I think $300, cheaper than the maybe $1500 full QT license). I'm not sure what the situation with pyqt4 is. The price is per developer. I don't know the current pricing because that's apparnetly impossible to find on the QT site.
If I had to pay the full price today, I would still do it (speaking as a commercial developer that is) -- it's really a high quality toolkit.
I think dabo is higher level than pyqt is though Qt also has various ways to integrate database data sources into your views. I don't know how important that is to you.
I'm not sure if things may have been different with PyQt3, but the current version requires you to buy a PyQt license (~$700 USD) in addition to a full Qt license from TrollTech.
We used pyqt3 for which you could buy a pyqt-only commercial license (I think $300, cheaper than the maybe $1500 full QT license). I'm not sure what the situation with pyqt4 is. The price is per developer. I don't know the current pricing because that's apparnetly impossible to find on the QT site.
If I had to pay the full price today, I would still do it (speaking as a commercial developer that is) -- it's really a high quality toolkit.
I think dabo is higher level than pyqt is though Qt also has various ways to integrate database data sources into your views. I don't know how important that is to you.