How much should I charge for product photography?

I have always done freelancing. But now I am movie into corporate business. So there is a company which is hiring me you can check their website https://www.baclinc.com/product-photography-services/ .
So as a freelancer I have charged around $5 per product including pic editing, instrument charges and all. Thing is this company is not paying me in salary for obvious reasons. Also they have a large number of clients, some big ones too. So should I charge them more? And If so, How much?