your best bet is to speak to them direct you are not going to find many wholesalers of branded tools............
i used to deal with both makita and dewalt dont expect a high mark up on them to depends on how much you buy is how much you get off retail........the company i used to work for were spending on avarage 40,000 a week and that got them 30% off retail prices........major high street diy stores will proberbly be cheaper that you can find them.........
www.makita.com
www.dewalt.com
give them a try and you will find all the numbers you need on the sites.........
hope this helps.......