Romanian prices:
Pentax K1 with Pentax 15-30mm and 24-70mm = 5.536$
Nikon D810 with Tamron 15-30mm and Tamron 24-70mm = 5.665$
Price difference = 129$
Canon 5Ds R with Tamron 15-30mm and Tamron 24-70mm = 6.289$ (or 6.044$ if you buy 5Ds)
Price difference = 753$ if you compare the price of K1 to the price of 5DsR (or 508$ if you compare the price of K1 to the price of 5Ds)
The problem is not the price difference which is not that big in Romania (at least not for a professional photographer). The "problem" is that with Canon/Nikon you have access to everything you can think of: flashes and triggers, third party lenses, you have the posibility to rent lenses and accesories, service, etc. And you have discounts almost every month for these 2 brands. For Pentax you barely find a lens in the store, you have no posibility to rent lenses or accesories and you don't find third party lenses. Not to mention the second hand market which is almost non existing for Pentax.
These are the reasons why professional photographers from Romania chose Canon/Nikon (even Sony) over Pentax and not because Pentax cameras aren't good. Pentax cameras are very good (everybody knows that), but as a system is not mature yet and it will take some time to be noticed in an already supersaturated market. And not to mention that when comes to our official Pentax dealer we are all wondering if it's ever going to wake up from its beauty sleep.