I like timberland, and if I were to vote for the cards as they are I'd vote for version 1 because it's more elegant and simple. (just imagine an average player playing with it the first times: how much did it cost and how much it was worth when?)
But I like the idea of variable vp values more than I like the idea of variable prices, since variable vps can lead to jockeying to end the game when you need it, and to me it sounds more interesting than just having some cards out on sale at some time
My suggestion is to simplify version 2 by having less price and value steps (as is, you have 4 different prices and 3 vp values - a pain to remember!)
To clarify, something like:
Really Big Forest - 4 coins
Worth 2 vp.
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In winter, this is worth 2 extra points and costs 2 (or 3?) coins more.
Or something completely different of similar complexity. (my example might be problematic because cost increases and cost reductions have an unclear relationship)