Since asking this question I've learned that:

The market is ignoring the economic value of the grades. REE's are not like copper results where they can compare apples to apples. The real issue is how much HREE do you have in that ore zone? If you look at the last column on the right on Ucores drill results, notice what the percentage of HREO's is. Meaning the percentage of the HEAVY rare earth element oxides. Our percentages are about 50% on average and as high at 71% but the market is ignoring that for some reason.