LOL I just read your post on the Free Dive List, and was gonna reply to recommend DiveInn and their Sproasub H.Dessault fins, but Cliff beat me to it!!
I just checked the DiveInn site, and you're gonna need to add $18 for shipping the fins to the US. Seems like a lot, but it's because they're based in Spain, and that's why they have such amazing prices for European brands. Shipping is DHL and you should get them within 3 days.
I ordered some recently ($29 shipping to Hong Kong!!) and I love them. I was actually looking for regular fins that would be good for freediving (eg Mares Quattro Power fins) when I stumbled onto the DiveInn site and saw the 'real' free diving fins for the same price.
Size 11 US is about 44 European. My footpocket is the right length, but it is pretty wide at the heel, so I have to wear socks for a good fit. I think all the Sporasub/Mares freediving foot pockets are wide at the heel (they are made at the same factory).
I highly recommend getting proper freediving fins, even if you are just starting out. I can use mine for surface swimming as well as scuba diving (where I can thrash anyone in a race), and when it comes to freediving, they are a world apart from my old Mares Plana Avanti's.
hope that helps.
Terry