Half the stuff here is stuff I want for my wargaming hobby but can't buy ready-made, hence the focus on 1:300th scale, which is what I play, at least for 20th century games. But once I've made a design, it's not too much trouble to adapt it to other scales for other people, so you can find stuff for various scales other than 1:300 too. But only for scales *larger* than 1:300; I can't scale them down, to e.g. 1:600.
Due to the October pricing change by Shapeways, I am currently not offering anything for sale as such - updating my prices will involve editing a 4200-line spreadsheet they "helpfully" provide! If you see something here you want, send a message to me and I will take a look at the price then and there and open up the item.