http://www.dakkadakka.com/dakkaforum/posts/list/8.page JForum - http://www.jforum.net http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6320893.page http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6320893.page GMT UK/ EU which might be a bit pricier/ slower to get in the USA, but I can recommend the product and service for all the UK ones below (Micro Art I can recommend the product but bought them in person at a show rather than by mail, so can't speak to their service there).

http://www.antenocitisworkshop.com/wargames-bases-basing.html

http://www.fenrisgames.com/shop.html#!/~/category/id=6759447&offset=0&sort=nameAsc

http://www.modeldisplayproducts.co.uk/index.php?route=product/category&path=38

http://www.shop.microartstudio.com/battle-bases-c-3.html

There will probably be cheaper and quicker US based bases, but most of these are fairly cheap to start with, so even double postage wouldn't make them outrageous.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6320939.page http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6320939.page GMT
http://back2base-ix.com/index.php?_a=viewCat&catId=3]]> http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6321550.page http://www.dakkadakka.com/dakkaforum/posts/preList/567092/6321550.page GMT