Not sure I agree about stock photos. Not all stock photos are headset hotties and bespoke photography is expensive. Even large organisations use stock photos, so I think it makes sense for a small company, especially if it isn't a core competency.
I work on software for apartment communities, and a huge offender I see is stock photos of smiling people being used on property websites. Do you want to see fake people on an apartment website? No, you want to see photos of the actual property.
http://deathtothestockphoto.com/ is awesome and very affordable.
http://www.istockphoto.com/photo/white-window-frame-and-wint...
Not sure I see the difference between that and Unsplash.