If you just want it as a dummy ie converter for your fiber to ethernet then anything would do really since this is not processed intensively.
We have a Gigabit Internet by Blazenet in the office and are using Syrotech SY-GPON-1000R-DONT as Dummy PON. It's working great with no issues and is small and uses very less power, so we have it connected, chucked it in a corner, and forgotten about it.
@itachi try Amazon...or IndiaMart. If nothing else just buy the cheapest single or dual band router possible and switch it to bridge mode. Most known companies supply directly to ISPs not retail..for e.g. Syrotech, Nokia and others.