Well, we upgraded our main website and now use OpenCart platform as that allows us to do everything we need via warehouses and stock handling.  We have live feeds running in from our suppliers as well as price updates.  For the suppliers that are not linked - we can use basic SQL updates too....  I updated 8,000 stock price lines in 5 mins....purchase price, mark up and selling price....We have built all the reports we need for sales reporting from the OC database direct and can have what we want -  unlike QB where the fields you really want are not available for reporting and so on....  We then built a Sales Invoice App (you know...one where you can easily change a Sales Receipt to an Invoice as opposed to deleting and starting again....or select the Invoice / Sales Receipt and click refund and then edit......rather than have to build the whole document from scratch.....oh and linked into the payment gateway we use.....(that is is .6% fees....not the QB 3% fees...oh...and we have the invoice in the format we want - not the restrictive QB ones.....)  rant over !!!

It is just incredible that Quickbooks allows you to have stock and then your can do nothing with it......they lie and mislead you when you purchase.  I tried external apps to upload but all were terrible and slow and just did not do it correct.....Each stock line in QB has a unique ID - so not allowing an update based on that unique field to update other fields, the most simple DB update routine, is just incredulous and shows how naive and stupid the company is.

We are based in the UK - and happy to put you in touch with the development team we use if you are interested