As an extract from the researched prices for 
10b-(1,1-dimethyl-2-propenyl)-6,10b,11,11a-tetrahydro-3-(1H-imidazol-4-ylmethylene)-2H-pyrazino(1',2':1,5)pyrrolo(2,3-b)indole-1,4(3H,5aH)-dione there are currently shown 8 prices in the last 8 years for CAS equal products. This small overview is intended to serve as a guide and trend.
Prices are in USD and range in year 2018 from USD 438.00 for 500  µg to USD 538.00 per 500 ug in 2024 .