To be honest, the way of Colevrak kit is made is completely wrong. The set should include Alpha Set and Colevrak instead of split them up.
1. Colevark Users has to to purchase both alpha and colevrak if they are interested. Otherwise, they can purchase only alpha.
2. Why will any person buy only a colevrak set if there is no alpha to go with it? especially when most of the group buy only happens once or twice.
3. If a person is missing an alpha set, And the Alpha set is no longer able to find, they can pay the price of (alpha+colevrak) set instead. I am pretty sure most will purchase anyway, knowing that the after market price will be much higher anyway. Items sitting in inventory because it is incomplete, not because there is no demand.
4. Let's say that the person already has alpha and only need Colevrak. they can purchase and sell alpha without any problems.
It is not because Colevrak is a problem, but the design assembly problems.
The easy way out is to take out the set(s) completely instead of thinking of a way to solve. Which, sadly, most of the designers have chosen.
You will ask me, why not combine ISO and others like the colevrak set as well. The answer lies in MOQ and the price of the items.
Given that the Colevrak set price is basically another alpha set to begin with. User already pay double. and We are fine with it since it is our hobby.
Let say ISO is $20. Will people pay $60 more just to get a $20 values? Maybe not.