You know what I think? I think more than a handful of parents are already shelling out bucks for swimming lessons and child-proofing of homes, on top of tuition. So the conjunctive adverb "instead" isn't relevant. The author without a doubt is being considerate about the wallets of the said folks, however she could have come up with much better suggestions IMO.

3 Things Singaporeans Parents Should Spend Money On Instead of Tuition