You may want to look into this website before ordering Revolution from them. I worked for a veterinarian for 8 years and know the hazards of ordering your pets prescription products online. Trust me, I understand wanting to save every bit of money you can these days but sometimes its better to be safe than sorry.
I cannot speak for this particulare website but Pfizer, the company that manufactures Revolution, generally only sell their products to licensed veterinarians. Companies like 1-800-Pet-Meds and the like obtain their products illegally or from overseas. When products are shipped from overseas they can have different FDA standards than we do in the USA and can also be shipped at extreme temperatures that can denatutre the products. When the products are denatured they can be less effective or not effective at all. I have personally seen dogs that came up heartworm positive after being on heartworm medication from online pharmacies. Revolution is a prescription medication for a reason. It would scare me to get a prescription medication without a prescription from a place that asks no questions. Even though we do not use Revolution to prevent heartworms in hedgehogs, I would still be weary of them.
Our clients were allowed to recieve a prescription for a full year (12 doses) of Revolution with only one exam a year. I don't know if there is a difference in how much you can get for a hedgehog as opposed to a cat or dog since Revolution is not labled for use in hedgehogs. We only treated cats and dogs so again I may be way off in how it is allowed to be dispensed to hedgehogs. It seems to me that a vet would not make you bring in your hedgie every time you needed Revolution and I might try and look for a vet that was more accomodating.
You could call the number on the back of your box of Revolution and check to see if this website is legally selling their product. The decision is obviously yours to make but I wanted to give this information because most people are unaware of the fact that the product they are buying is not covered by the manufacturer warranty because it is not sold by an authorized retailer. Hope this helps!