Why are T3 gems so rare in Mari's shop

Is the Mari shop random as far as what items it has for sale? For the last 3 days we have 0 T3 chest gems to buy however 5 instances of the T2 chest gems in the same period. Is this done on purpose?

It’s probably random

RNG Jesus is currently sourcing the best available gems on the market. However, due to unfortunate circumstances, the price of T3 gems are too expensive to afford, therefore for the love of the father, and the son and the holy spirits, please have patience

Another rotation and still no T3 gems.

The life tab in Mari is pretty RNG I believe so maybe we’re just having a series of bad rotations. I remember some times when there were no guild honor badges in the shop for a day or two. Another thing to consider is that Mari’s shop usually scales with where the general playerbase is in terms of progression I believe. The more people that are in T3 the more often there will be T3 mats. This probably also applies to the actual items in the shop as well in terms of scaling: selling medium or large shard bags instead of small ones—in Korea you can actually buy like 400 honor leapstones as a single bundle from Mari instead of the bundle of 10 that we have. T2 gem chests being sold more often than T3 chests may just be a result of there being a lot more people in T2 compared to T3. Eventually when mostly everyone is in T3 we might see T3 gem chests being sold exclusively and no T2 chests at all.