Dust inside Nikon Dslr View finder? Looks like gone inside of the prism?

My d5300 which I been using for nearly three years now had some dust speck now and then… BUT this one is big and in the middle. Its get in the way. I used the air blower no luck… Job for Nikon? Any idea how much they would charge?
Canon has list of services and price published… Why can't Nikon do this?

Any decent local camera shop will offer a cleaning service or can direct you to someone besides the manufacturer. Just have a look in your local Yellow Pages. Avoid big box stores like Best Buy. Look for a locally owned and operated place. You may have to drive to the nearest city.
Price will probably range from $60 to $150 depending on the shop, if they're Nikon authorized, etc.
I prefer to take my cameras to local shops when possible to avoid shipping costs and potential damage. Local places usually charge quite a bit less for what amounts to the same work and a simple cleaning is just that, nothing to charge an arm and a leg over.
No need to start another Canon Vs. Nikon debate about it!