I buy qs lax for:
Sapphire Force (30k) + Sapphire Blood (15k) = 45k

QS lax in torishop costs 27k... 45k-27k=18k. U have +18k!

If you look through market selling threads:
Sapphire Force is 10k
Sapphire Blood is 5k

And QS Relax is 27k + Sold Out.

sapphire blood is sold out too...

it's widespread because it's a promo item.