Just want to point out that there is no chiyuv to lain.
It’s a nice minhag, but a very recent minhag. From what I can tell it’s not encouraged in Israel. Even in America I know of shuls that don’t allow it ( for various reasons . Including many are concerned that due to inexperience and stage fright the boy will lain from memory and not from the klaf)
So,
It certainly makes sense to spend more on laining then the gashmius . But if finances are a concern, then don’t do it.
I gave my kids the options. One chose not to do it another did part of it. Another did the whole thing.
