Otherwise, Dave Thomas at AAMicrophones.com has better prices. He also sells a kit to modify an APEX 460. I am assuming micparts sources from China. There was a sort of flame war on GroupDIY.com a while back between him and someone who assumed his capsules were the same as WGTChina (where I bought some). He indicated no, and that the quality control was much better. I believe AAMicrophones uses the same factory in China as Peluso, but all the finish work is done in China (where Peluso does it in the USA.)
If you really want to DIY, and are reasonably skilled, GroupDIY.com is a good place for info, and the white market there is a good source for kits or links to kits. They also sell or provide links to some really really high end. Like hand made C12 and M7 capsules in the $300-500 range. (I've stayed on the cheap myself) but if you want to spend more money, Check it out.