Hi Gertrude,
Obviously a Beaver would be best, but you don't have to resign yourself to never flying floats just because you can't afford a DHC-2. Perhaps you could buy a share in a C172 floatplane, or similar?
It doesn't take much to purchase a float-equipped Champ, Chief, J-3 or PA-11; in decent though not pristine condition, such aircraft sell for no more than C$50,000 (about £22,000, at current exchange rates). And a small airplane like that is cheap to run, too!