Hi guys,
You can buy smaller doses of DMSA here:

http://livingnetwork.co.za/zencart/index.php?main_page=index&cPath=65_68

The owner of the site is a member of the frequent dose chelation group (andy cutler protocol) and arranged to have these smaller doses made up by a compounding chemist. You can also get tablets that contain vit C or ALA and DMSA together. The dosages start at 3mg which is excellent! I totally agree, I don't see myself spending a lot of time splitting pills etc. I think some other companies do sell less than 100mg DMSA, I'm pretty sure you can easily get 25mg from other sources maybe iherb?? or viaglo?? somewhere like that anyways