The only matched price in this check
The Sealy Argo Firm MKII page at HiFi Corp is titled as an 183cm king, standard-length firm mattress and displays a cash price of R10,499 [1]. The page also shows instalment and credit figures; those are financing amounts, so they should not be compared with a cash sticker price. This is a reference point for the method, not evidence that Sealy is cheaper, better or representative of the South African market.
The product page describes the model as firm and lists features such as zoned aloe fabric, hybrid design support and edge support. Those are product-page claims, not independent comfort, durability or medical findings [1].
Why the other displayed prices are not comparable
HiFi Corp’s Restonic Barbados page is explicitly an 183cm king extra-length mattress. Its displayed R6,099 cash price is therefore not a standard-length match and is excluded from the reference comparison [2]. Do not present it as a cheaper equivalent to the Sealy listing.
Beds Online shows the Cloud Nine Meridian King at 183cm by 200cm with a R40,699–R44,499 range. The page also asks whether a base is needed, so the displayed range is not enough to establish one selected mattress-only cash price [3]. It cannot be used as a precise like-for-like total.
The Futon Mattress – King page displays R2,699–R3,299 and lets shoppers choose Standard Length or Extra Length. It specifies 183cm by 188cm by 14cm for standard length and 183cm by 200cm by 14cm for extra length, but does not expose which displayed amount belongs to the standard-length choice [4]. The range is consequently omitted from the price verdict.
A safer way to compare king mattresses
For each candidate, record the exact model, width and length, thickness if relevant, whether the listing is mattress-only or a base/set, and the selected cash total. Then record delivery charges separately and note the date checked. In this sample, the usable baseline is 183cm standard length, mattress-only wording and R10,499 cash for the Sealy Argo listing [1].
No like-for-like price verdict between brands is established here. Before checkout, select the exact length and any base option, confirm the resulting cash total, and keep extra-length or set prices in a separate column. That simple check prevents a from-price, financing total or bundle from being mistaken for the price of the selected mattress.