They are completely different, as you can see by looking at the grass, dirt, cliffs, trees, and water. The $10 version of this pack just borrows the color palettes from those sets. The 4 seasonal packs have maybe 5-6 times more content, as should be clear in the product descriptions.
However, it's worth noting that the free sample version of the 4 seasonal packs are similar in size to this pack.