£2.99 for a folding saw could be ok as a spare/back-up, two different blades to pick from.
https://www.aldi.co.uk/en/specialbu...uk_product_newsletter&pk_kwd=2013-08-19_16-30
https://www.aldi.co.uk/en/specialbu...uk_product_newsletter&pk_kwd=2013-08-19_16-30