If the Debit card has like a mastercard or discover or some other logo like that then it should function exactly like a credit card for websites. If not then I don't think it will work, though I could be wrong.
But most debit cards I seen do have such logos, I guess most banks have credit card partners.
But in the case it doesn't work you could setup a PayPal account linked to your bank account then use PayPal to pay it. PayPal doesn't cost anything plus you can take online surveys that pay you like .75 cents to 5 bucks for taking surveys. (all transfered to a paypal account in most cases.)
Yes, the shipping is discreet which is nice. Also I have only ordered from them once but it was a great experience. I was too scared to use my credit/debit card for I would have to put in my home address...so here is a tip to all who wants diapers but doesn't want it delivered to their home! This is how I did my one order...and plan on doing it again real soon!:
I got myself a prepaid credit card and used that for my payment for my Abena X-pluss! oh yea! Then for delivering address I put down a UPS store. And I wrote down HOLD FOR PICK-UP. I called the ups store and told them that I was expecting a delivery there to be held for pick up for me (give them name). Then 3 or 4 days later the UPS store called me i went down and picked up my Abenas! And bingo... diapers with absolute discreetness. No worrying about parents being at door when delivery comes and asking questions about what is in the box. (Also the slip on top, very small, says xpmedical for their return address...so if parents get this I am sure they might be nosy and read from who it is from).
So if you have room mates, live at home, you can have it mailed to a nearby or far away ups store (i think any type of place like that would do it actually...don't hold me too it though please .) It cost me five dollars for them to hold, but it is definitely worth it! Good luck to everyone out there who needs to buy discreetly online!
The customer service at XP is the best. Gary truly cares about his customers. He's a wise businessman, primarily by not being a "typical" businessman. He'll take care of his customers, having faith that it's best for the long run, even if it costs a few cents today.