IPA: /nɒnˈdɪskaʊnt/
KK: /nɑnˈdɪsˌkaʊnt/
This term describes something that is not eligible for a reduction in price or is not offered at a lower price than usual.
The store has a nondiscount policy for certain premium items.
Nondiscount → It is formed from "non-" (meaning not) and "discount" (from Old French *descomter*, meaning to deduct or subtract). The word "nondiscount" means not subject to a deduction or reduction in price.
Think of 'not' ('non-') allowing a 'deduction' ('discount') — that's why nondiscount means no reduction in price.