I think this is a fair request. All the A600/A500/A1200 early adopters probably done their part in paving the way for the new cards.
On the other hand I can understand if people want to make a business from this when a lot of time and effort is spent.
For me I see 3 options:
1. I keep my V2 cards for as long as they work. I have 3, for A600, A500 and A1200.
2. I try to sell them and if sold pay the difference for the new cards.
3. in case they can't be sold I maybe upgrade one and find a new use for the old one.
The new cards are great for new users but a bit unfortunate for the early consumers who spent considerable money in the last 3 years or so.