I went into WP in order to get a good webshop, this I think I can manage. In addition to he webshop I'm now looking for facilties as bookkeeping, logistics, purchasing and warehouse, even a real physical retailstore is on my wishlist. And, here comes the tricky part (I assume) and want it all to be linked together - as an real ERP-system - here is Europe we have SAP and also some Lawson system, Lawson is US I believe.
I hope you get what I mean - I not I can of course describe in more details.
I have since some year ago a windows based system where all this is in, the webshop is however just too poor in there. The monthly fee is approx. $30 - one user. http://www.mamut.com if you want to check it out!
I found a lot of WP-plugins for the webshop it selves, but for the other parts I found it very tricky to find some, hope you have good ideas for me!