Dentek makes these Wide Brush Picks just for people with braces and I found a great deal on them.  Normally, they are $2.79 per pack of 8.  With this online coupon, they're just $0.50 per pack for 10 packs or more and you get free shipping for 20 packs or more.  That means you can get 160 Brush Picks shipped to your house for just $10. 

the website is: https://dereferer.me/?https://dereferer.me/?http://dentek.com/shop.php?target=products&product_id=29

Use this coupon code at checkout for the discount: test1234

Hopefully this is helpful.  I know it is for me!