I am sorry that you and your entire family has been struggling so much lately. Emotionally, physically, and financially. Times like those are really tough ~ I agree.
However, you asked our opinion on the issue, and I feel compelled to tell you that I disagree with your idea. I can understand how desperate and wishful you are feeling inside. You need to pay your bills. That should come first. Second, comes gifts. If you cannot afford to buy this year, maybe you could make gifts instead. Write a story to read to everyone, or poems. Perhaps make crafts instead? Pastries or cookies? Just some low-cost/high heart-appeal ideas to get you thinking.
If you haven't changed your mind, okay...but I think that you ought to be completely honest on whatever site about where where those gift dollars are going. Otherwise, you could be fighting a lot of guilt or remorse in the future.
Just my honest opinion. I do wish you the best. Really! ((((hugs))))