I'm sure most of you already know this, but a few may not. If you go to Frog God Games' webpage: (I can't insert a link from this PC. Grr...)
You can click a button and be added to their Daily Deal email list. Most of the daily deals are for PDFs of Necromancer products. Earlier this week, the City of Brass PDF was the deal for $2.99!
Deals end at midnight and there's a new one, Monday through Friday. I've picked up several Necro modules I didn't have for just $1.99 each.
It's a pretty good option if you want to load up on some Necro PDFs. Heck, it's a steal.