Agoras is not on Ethereum so buying it would cost more as someone would have to convert ETH to BTC to AGRS. This might also induce taxes, so there is no really easy way to get ETH wealth out of Ethereum right now in my opinion. On the other hand I do think Agoras will easily be over $1 as well once the founder Ohad releases some code and related documents. If you can get it cheap then get it cheap while you still can because 6 months from now might never see these prices again if Ohad proves his thesis.
RE: iEx.ec has a great board of advisors which includes reps from Genesis Mining, Gatecoin, Wanxiang Blockchain Lab, and more!