[Question ] Why the price of TF2 Keys is getting lower in the market?

Likely still cause of the rockstar sale

Set of good sales caused it: Rockstar, Calypso, CS:GO, F1 and Metro: Last Light. There is also a "panic factor" involved when price is getting lower & lower...

Same happened during the winter and summer sale.
If you own a lot of keys its best to stay low for a while. If you want to buy keys this is the time to do so ;)
Prices will go up again after the sale.
Most sellers on steamtrades adapt their prices to the current key prices. Buy your keys now, trade your keys when they are worth more

Thanks guys