If your developing for the uk though a .co.uk is better than both .net and .info (in my opinion).
Photography-store.co.uk is also available for $199 (£134), so I think it should be somewhere between the .com value and the hyphenated value. Also, where did you get the .com value from? I had only seen the .net and assumed the .com would have been 50% or so more (around the $900 mark).