I bought quite a bit of items today at the coin show here on Long Island. I got 1986-1990 Prestige Proof Sets for about $107. Two were $20 a piece, 1 was $17, another $22, and the most expensive was $28. All were in government packaging and the COAs. The other proof set I bought was a graded '68 by NGC. Ever coing graded PR69 and it was $70. I believe it is hard to get every coing grading the same. Am I correct in that. Then I got a '74 UNC Clad Ike for $6 and a proof '71 Ike for $9. The other item I got was a 1935A series $1 Hawaii bill for $35. It is in a bit rough, dirty, but I thought very rare. Please comment on what you think were the deals.
I can't comment on the coins but I just posted a 1935A Hawaii note brown seal on paper money forum. Depending on the block of the note and condition is crucial to grading/pricing. I would suggest posting a pic on the paper money forum for more details and info.