SATA host IP for cyclone IV GX ?

Hi,

I planning to develop a SATA interface to plug a SSD to save video sequences.

I would like to use the cyclone IV GX family.

I have found a development kit and a daughter card (cyclone IV GX development kit and SATA/SAS HSMC Card by Terasic) but I am still searching for a SATA IP.

I have found 3 IP by nuvation / intelliprop / asics.ws but only intelliprop IP seems to be ready for Altera & cyclone IV GX. I was expecting a price around 5000$ but it's really more expensive (>x5).

So I would like to know what solutions are used by other designer : other commercial IP ? difficulty of developing a SATA interface from scratch ?...

Thanks for helping.