Seller does not honor the terms of trade and disregards any agreements made. Even if you have agreed to buy for a fixed price, and ask for a short period to reserve the account to get the btcs, and even if the seller accepts, he will sell it to the highest bidder with no warning.
Buyers, negotiate with caution with this seller - he won't take you seriously unless you are ready to pay him right now.
When I approve trade terms to escrow I honour them.
In our conversation you asked more than once about reservation, and I promised you this:
I will need a couple days to get the BTCs, so if you could reserve the account, then that would be great!.
All I can do is if anybody want buy at 0.25 I will ask if you want buy at 0.26 or pass (you will have 24 hours if your offline or 1 Hour after you become active, whatever comes first).
Before you got BTC or arranged escrow, it is true I sold account to other buyer. I explained him the kind of reservation, and he offered he buys immediatelly at a price over 0.26 BTC + bunch of member accounts or he passes. Because your trade was far from sure, you reserved the right to not buy if you dont like the username, and technically I honoured our deal because he overpaid your reserved 0.26 BTC, I decided to sell. Also there were more buyers without BTC wanting buy at 0.25 BTC, and if I started moving the price up to them it could look fishy.