I have only ever seen the UNC 1,000,000 Peru note one time; the owner was asking some $45.00!!!
The 5,000,000 note was redeemed for 2.5 to 3 soles; when the new money was issued (Limaeasy.com.pe).
Finding a UNC 5 mm - will be difficult & expensive (probably close to $150.00); if I had to guess.
I enjoy the old Peruvian money; it gives me a "feel" for the economy in past years.
I had a collection of old US paper money; that I gave to my son as a wedding present - had collected as a kid.
The lower, more common denominations from 1970's on - are mostly worth 20 centimos (or less in quanity).
My grandchildren enjoy them, as have pictures of Inca people & chiefs - very colorful vs. green/white (US).
Best wishes in your collecting; hopefully we can enjoy a cup of coffee/hot chocolate soon.