Polysleep Sierra 9" Memory Foam Mattress — Medium Firm Mattress in a Box, Made in Canada with Antimicrobial Foam — King Size
Getting the latest price…
Price is in the 11th percentile of its range
6% below average ($623.09). A small saving, but not the lowest we have seen.
ASIN / SKU: 17920738
Price History
43 price checks since Jun 16, 2026
Lowvyn Plus members see the full intra-day price history.
Common Questions
What is the lowest price ever recorded for Polysleep Sierra 9" Memory Foam Mattress — Medium Firm Mattress in a Box, Made in Canada with Antimicrobial Foam — King Size?+
The lowest price Lowvyn has tracked is $549.50. The highest was $895.00. The current price at Best Buy Canada is $588.75 CAD.
Is the current price a good deal?+
6% below average ($623.09). A small saving, but not the lowest we have seen. Lowvyn Score: 56/100.
Where can I compare the price of Polysleep Sierra 9" Memory Foam Mattress — Medium Firm Mattress in a Box, Made in Canada with Antimicrobial Foam — King Size across Canadian retailers?+
Lowvyn cross-references prices across Amazon, Walmart, Best Buy, Canadian Tire, Canada Computers, Newegg, and Visions Electronics in Canada. We haven't yet matched this exact product across retailers. We'll surface comparisons as soon as the same SKU is identified elsewhere.
Where can I buy Polysleep Sierra 9" Memory Foam Mattress — Medium Firm Mattress in a Box, Made in Canada with Antimicrobial Foam — King Size?+
Polysleep Sierra 9" Memory Foam Mattress — Medium Firm Mattress in a Box, Made in Canada with Antimicrobial Foam — King Size is currently listed at Best Buy Canada for $588.75 CAD. Use the "View on Best Buy Canada" button on this page to go directly to the listing.