While much of the bad of Unglued is only really identifiable in hindsight, the set was popular at its debut, and Rosewater immediately started work on a follow-up
And for limited restocks, getting alerts when the queue is loading becomes a crucial advantage
This has meant the set suffered from low sales, indicated by products quickly slumping in price
So you have to hit it from another angle, like countering it, or destroying their mana base to prevent its replay with the Commander tax or run a non-targeting defensive card out there, or mass removal
The first time I saw it in print, I was scared it would bring the whole format down
Other things that affect the price of a card are reprints in new sets or being banned