What is the approximate breakdown of grades for 86,87,88,89 silver eagles for original rolls

I have some original rolls 80s silver eagles. As is - I assume they are 420 or so a roll. But I was crunching some numbers and was considering getting a few rolls graded. 69s seem to go for 35-40 each (as per my quick search on ebay). So my question is are 69 standard for these type of rolls? Or am I setting myself up for disappointment.
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You could be disappointed or you could get lucky and hit the bigtime. That's the beauty of the RISK/REWARD factor. So, who is paying $35-$40 for one of these without the plastic ? That should be your target market.
``https://ebay.us/m/KxolR5
<< <i>So, who is paying $35-$40 for one of these without the plastic ? >>
Nobody - I was referring to PCGS 69 graded examples. And maybe I would get lucky and score a 70.
I agree they are just bullion not coins but I see people making money all the time on the modern stuff and was thinking about giving it a try with these