I think perhaps the earlier poster meant "Black Friday", or the Friday after Thanksgiving, not Good Friday, the Friday before Easter. I don't particularly know about any sales that go on around Good Friday, in particular. But, to be perfectly honest, I think stores are a good place to avoid on "Black Friday" as well.
Last Christmas, my son's Christmas present was that we let him go to Spain with his Spanish class, which cost about as much as the entire family going to WDW for a week, after all was said and done. We only have our son, my husband and me in our family, though. Generally, we have not made a big issue of having a lot of gifts to open on Christmas. I actually chose less than $100, because I was including all the kids we get gifts for, like cousins, nieces, nephews, grandnieces and nephews, etc.
If we give a gift for Christmas, though, we try to make it special, and don't try to pass off things like school uniform pants and shirts, etc as Christmas gifts. I am not meaning to be critical of my brother and his ex-wife, but, one year, I think they saved up everything they bought for the kids for several months and wrapped them up as gifts. If it is something special, that I know that my son really wanted, but we didn't buy right away due to expense, that we would give him as a Christmas or Birthday present. The other stuff, that he needs for school work and stuff, we just get as we need it, and in a timely manner. For example, this year he needed a new computer for school. Obviously, we aren't making him wait until Christmas to get it. We might pay for a special accessory for his computer that he wants for Christmas, however.