Example: I studied in Edinburgh from 2008–2012, but was from Wales. I had to pay around £1800 per year tuition fees, but accommodation at its cheapest worked out at £300 per month, without taking into account costs like light and heat.
I have a student loan of about £30k, of which about £9k was tuition fees.
Free tuition would have saved me between a quarter and a third of the cost of going to university.
Now fees are greater than £9k per year, which many believe is absurd. Based on my example, assuming no inflation on living costs, I would have borrowings of £84k without even taking into account interest – all of which I would almost certainly never repay.
However fees are only paid by the government if a Scottish student (including those from elsewhere the EU, at least before Brexit) studies in Scotland; not if they study elsewhere in the UK.
[1] https://www.advance-he.ac.uk/knowledge-hub/student-academic-...