To the OP, I think you should just suck it up and keep the fountain. I know how you feel about the money and all, but since your DH obviously went to great pains to *try* to get what you wanted, I think it would be hurtful to return it. I have had to do this one time and my DH has never gotten over it. I still think I was right because I really could never have used his gift, but you can.
One Christmas my DH didn't know what to get me. He did know that I needed a watch and he knows I like watches with large faces. When I get the watch, sure enough, it had a large face--BECAUSE IT WAS A MAN'S WATCH!!! I had to return it. There was no way I could've have worn it. I know you can with some of the more athletic styles, but this was a dress watch. To this day, he refused to believe that it I couldn't have worn it and insists that I don't like anything he buys. Egads. So be very careful about returning it.
As to the nastiness on this thread--I realize everyone has their customs. For my family, spouses do not buy each other gifts on Mother's/Father's Day. We *assist* the kids with buying gifts. When the kids are old enough to do it on their own, then I fully expect there will be no gifts from my DH nor will I get him any. But that's my tradition. What gets me is not so much the spouses buying for each other but the *expection* some of the women on these threads have for gifts. It's just incredible to me that people can be so nitpicky about their gifts. And "pre-ordering" the gift is too much. It really is just the thought--be it a gift or just a gesture. I have a male colleague who has one of those wives that expect all kind of pomp and circumstance on any given occasion. My friend and I were chuckling today wondering what kind of hoops he's jumping through for Mother's Day. We will get the full story tomorrow at work. He will be exhausted and we will have to buy him a beer.