Here are some popular Jewish sites that we would like to advertise on:

YeshivaWorld.com - (offering us a $600 banner for only $400 per month)
JewishPress.com - (offering us a $300 banner for only $200 per month)
Arutz Sheva - (offering us a 30% discount for any advertising)
Jpost.com
vosizneias.com
matzav.com
onlysimchas.com
yiddele.com