I bought also some keys from softwareseller.
Till now everything worked fine and he also gives additional support and fast answers. So if i see anything interesting, i will again buy! i would say:
stop spaming and attacking his offers. If you want to buy, write him, if you do not want to buy, go ahead and read other threats...

Thank you for your good offers and the support. looks very good till now.

btw i bought office, kaspersky, win8 and win7
first 2 i already tried, last 2 i will soon, but i have no fear that they will not work, he seems to be fair and trustfull till now.

sorry for bad english, could be better i know