Ramshackle Games has some new miniatures up that look like they would work great for some Penal Legion or Psyker Battle Squad members.
These guys are £1.50 so that converts to about $2.25 for those of us stateside. I have ordered quite a few bits from Ramshackle in the past and the shipping hasn't been that bad. The only issue I have ever had with them is that their bits are a bit rough - don't order expecting Forge World quality. What you get is right in line with the price.