Interesting set of Decanters you have there...Most of these date to the 1970s!
While I do not specializes in Decanters, I am familiar with many of these here in the US, and can give you some idea of their selling prices here...
The Cars & Pistol are the most collectable, and since you have the boxes (rare) most of these would sell for about $100-$150 each.
The Canadian Masterpiece is a harder sell, as there are fewer collectors of Canadian whisky items, but I have seen this same bottle (no box) sell
about 4-6 months ago for $54..with the box, I'd appraise it at about $65-$75.
The Ezra Brooks CB-Decanter (1976) is worth about $50.
The Poulan Chainsaw-decanter (1979) is worth about $35.
Walter C Hurst