Our insurance company requires we us D & B for medical supplies, in our case it's CPAP supplies. So we were buying from them when our insurance would cover a portion of the supplies, but now our crappy insurance will only cover a portion of the supply costs after my husband reaches his deductible, which he never does. We found D & B to be marking up the prices on his CPAP supplies to DOUBLE what they actually are at an online store. I find this a little odd. They double the price of the supplies because they know insurance companies will kick in a portion.... I also find it odd that my insurance company also owns D & B so they are really just over charging themselves and leaving me to pay about what I would online. I just cut out the middle man and shop online now and they ship it to my house for free. read more