Staples has APC Back-UPS 900VA BN900M Battery Backup UPS & Surge Protector on sale for $54.99 (discount shown during checkout) when you apply coupon code 57031 in cart. Shipping is free, otherwise select free store pickup where stock permits.
Note, you must proceed to checkout to see the discounted price.
https://www.staples.com/APC-Back-…ct_2259350