Just checked, its Tribulus and not Peony. Minor thing but yup easier for comparison.
Anyway, pretty sure previously, you were able to see the value movement easier rather than that flat looking graph.
For reference:
[image: i.ibb.co]This was 1 month graph so not much value difference understandably.
[image: i.ibb.co]This was 3 months value with a value difference
of about $4,000 difference between the highest and lowest point. Last 6 months graph in original post had a similar highest and lowest point.
[image: i.ibb.co]The above is for Book of Carols but had about $12,000 difference between highest and lowest point. Tribulus 3 Years graph in my original post had about $10,000 difference between highest and lowest point.
tl;dr Basically, you should be able to see the value difference to roughly guestimate what is the value over time to see if it is currently being overpriced based on previous years, rather than flat looking line where you can't see the value movement