As far as buying you should go to The Reef Shoppe in the Bronx, they are very reasonably priced. I am sure there are several on here that can hook you up with free or cheap frags. I just restarted my tank as well, otherwise I would be one of them.
if u can pick up, i have a bunch of sps frags (very hardy) I'm looking to sell..
- red/ blue dig
-bali green slimer
-tri color valida
- green psammacora
- bird of paradise
-scripps acro
-yellow porites
would give u a deal on a few pieces if u grabbed the apex jr too...