Let's put this into perspective. The two most recent expansions to the Home Farm are for 30x30 and 32x32. While the 32x32 land expansion is technically still on "sale" for 5 days only, it still goes for 180 Farm Cash. Both of these expansions, then, wouldn't be part of this weekend sale. As for English Countryside expansions, there are four that many farmers have likely not unlocked: starting with 26x26 and up, simply because of their prices (2.5 million coins, 5 million coins, 195 Farm Cash and 195/215 Farm Cash respectively). This, again, takes us to the 32x32 sized farm, but none of these are included in the sale.
What's even more disappointing about this sale is the fact that Lighthouse Cove expansions aren't included. As we're limited (in Lighthouse Cove only) to a certain number of crops based on how big our farm is, and since these early expansions start out costing 30 Farm Cash each, it would have been great to see them included in this sale. Whether this means the prices will soon turn to coins instead is anyone's guess, but for now, I suppose this is one sale that most of us will simply have to miss out on.
Are you a farmer that can take advantage of this sale? Will you purchase any expansions for your farms this weekend? Let us know in the comments.