What is your progression in game? I'm paragon and I constantly have to sell t1a from my overflow but when I was Cavalier I struggled to get them quick enough. Unfortunately there is a bottleneck where t1/2/3a are concerned, when you're at the level of the alpha you need you find yourself needing them more and more but once you've progressed to the next title they start coming much more frequently.I think we've all been there at some point or other whether it be for t1a or t2a .... t3a will be no different for paragon players once they're more readily available.
May as well be able to buy any rank up material there. T1A/2/3, T1B/2/3/4/5/6 and class catalyst. Doesn’t make much since to limit it. But please add gold.