Below is a list of the various places I have bought stuff from for my 10/12mm WFB games.
Pendraken Miniatures -
Model Scenery Supplies -
The Dice Shop Online -
Fluid 3D Workshop -
I run The Wargames Website and I have a big old topic on there that I keep updated and it has a lot of 10mm warhammer content.
I run a 10mm fantasy FB group that is advert free, so if you want to see other peoples 10mm fantasy this may be worth a join.