TBAC 50% and 100% Certificates

[NearSighted25]

I am curious what the circumstances are for the several 50% off and 100% off certificates which are out in the wild.
Why and under what circumstances exactly are these certificates given out by Thunderbeast?

It seems like these come up for sale now and again and are a great way to defray the cost of these superior units.

 

[robpiat]

Tbac is very supportive of matches all over and these are prizes.

 

[NearSighted25]

Tbac is very supportive of matches all over and these are prizes.

That makes sense. Much appreciated. It's also very generous that these certs are transferable.