Well, the cap is an officer´s one. I think it is a made-up uniform set; If I were you, would ask for much better pictures than the ones you got.
There's nothing in the streets
Looks any different to me
And the slogans are replaced, by-the-bye
And the parting on the left
Are now parting on the right
And the beards have all grown longer overnight The Who, Won't get fooled again
As for price...
It depends upon what all the other medals are and if they are all genuine (For example, if there are sevastopol or odessa's in there somewhere, they would be suspect). The red banner by itself may be good for $500 or more nowadays depending upon the type. Great bullion embroidery on the collar, though. I had a similar one once and still miss it from time to time.
If you buy the tunic, will you also get the name and bio of the owner? Or, is it a later put together set? Tretov is a great source for Cold-War era Admirals caps, so you can make a great set.