maybe you're right. i just said that i've never considered price. cuz it's so low that i usually can queue to clear every blocker on every planet as soon as it's researched.
and as i was saying i use blocker tech to reset social "cards".
for example if you have 2-3 useless techs and a blocker. you can quickly research blocker for a chance to have something useful faster. this method helped me a lot when i were trying to rush gene tailoring.
The one thing is planning certainty. You know you can remove blockers with MoN.
Tileblocker Techs have a T1.2 times 2 Weighting. With 0.5 weight if you just finished a blocker tech. x1.25 if you have New Worlds specialist.
There is 9 of them. And you can not draw them until you got that Tileblocker on any colonies
and at least 2 planets.
Funny enough Mastery of Nature increases the weighting by a factor of 4. Maybe it should originally increase weight, rather then just giving you all of it?
The other is cost. 100 Energy/Minerals are a lot of resources early game.
Even the very cheap tileblockers on teh capitol can easily cost: 300 Energy and 300 Minerals. Wich is a ton in the early game. That equals two Robots + 200 Minerals or almost all the minerals for a Colony Ship or Space Port. Consider if you luck out with a early Enclave and can trade that energy for Minerals.
It is way worse with Colonies, where evey tileblocker cost 100 of each and you need to wait for the tech.