I am sorry, I though you knew how the markets work...

I apologise - I've assumed wrongly!

/end sarcasm

In my example above, I am not buying Bitcoins, it just happened that I have 125,000 of them, itching my hand to spend and "help" the economy.

And yes, I am pretty certain of my estimate that creating a instant sell order for BTC125,000 will bring down the price +/- 30%, probably over few days.