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Homechevron_rightCar Seats dealschevron_rightDiono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm
Good DealDiono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm
query_stats Price history & deal verdict

Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm

The Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm is currently trading at $189.99, representing a substantial 15% markdown against its 90-day moving average of... Read full analysis & FAQs ↓

Current price
$189.99
Price as of September 2, 2026, subject to change.
shopping_cartCheck price on Amazon
Current low$189.99Amazon
90-day avg$223.82historical SKU average
Today vs avg15% belowworth checking
Last checkedSep 2confirm at checkout
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Amazon pick

Diono Radian · 1-count pack at $249.74/count, 15% under its 90-day average.

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Best buying options

Merchant rows include current price, subscription price where available, unit cost, and shipping notes.

AmazonAmazon link-only offer. Price may change at checkout.In stock signal
$189.99current
-list
-subscription
$189.99 / count
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Price as of September 2, 2026, subject to change.
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timeline Price history

90-day price movement

Jul 26, 2026: $249.74 at AmazonAug 27, 2026: $219.99 at AmazonAug 28, 2026: $239.40 at AmazonAug 30, 2026: $219.99 at AmazonSep 2, 2026: $189.99 at AmazonSep 3, 2026: $189.99 at AmazonSep 4, 2026: $189.99 at AmazonSep 5, 2026: $189.99 at AmazonSep 6, 2026: $189.99 at AmazonSep 7, 2026: $189.99 at AmazonSep 8, 2026: $189.99 at AmazonSep 9, 2026: $189.99 at AmazonSep 10, 2026: $189.99 at AmazonSep 11, 2026: $189.99 at Amazon
Sep 11, 2026$189.99Amazon
Current best$189.99down from $249.74
Range low$189.99Sep 2
90-day avg$223.82current is favorable
Jun 1390-day avg $223.82Sep 11

Current best price is $33.83 below the 90-day avg. Chart starts at Jun 13 because that is the earliest observed point in this window. Recent range: $189.99 to $249.74.

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Confirm baby fit and stage

Check size, age stage, formula compatibility, and safety certifications before choosing the lowest current price for car seats.

$249.74 / countCurrent one-time unit price
1 countTracked package size
$/iteminfant, convertible and all-in-one car seats
shieldGuard S&S Price ($161.49)notificationsAlert below $180.49Back to category
verified_userPediatric Value Analysis

Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm In-Depth Value Review

Exceptional Value: Currently 15% Below 90-Day Baseline

The Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm is currently trading at $189.99, representing a substantial 15% markdown against its 90-day moving average of $223.82. At an effective unit rate of $249.74 / count, this listing stands out as one of the most cost-efficient offerings in the Car Seats category. For parents managing ongoing infant care expenses, this pricing window represents an opportune time to stockpile essential supplies before pricing reverts to historical retail baselines.

💡 BabyPriceWatch Smart Shopping Strategy:Lock in the current deal at $189.99. Stacking Amazon's Subscribe & Save tier can yield an additional 5% to 20% discount on family baby essentials, bringing the effective price down even further to as low as $161.49.
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Key Advantages

  • Favorable unit economics: priced at $249.74 / count in the Car Seats category.
  • Pediatric brand pedigree: Diono Radian complies with stringent child safety and material certifications.
  • Verified price dip: current price is 15% lower than recent 90-day pricing.
  • Subscription eligible: supports automated recurring delivery discounts on major merchant platforms.
info

Things to Consider

  • Package sizing consideration: the 1 count volume requires dedicated nursery or closet shelf space.
  • Size progression risk: infants grow quickly across weight bands; avoid over-stockpiling more than a 6-week supply in a single size.

child_careDevelopmental Stage & Sizing Fit

Target Stage: Infant to Child (4-65+ lbs)
Category: Travel & Mobility Gear
Package Size: 1 count

Verify vehicle latch alignment and harness strap shoulder positioning. Register manufacturer warranty card for safety recall notifications.

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Frequently Asked Questions about Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm

Is $189.99 a good price for Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm?

Yes. At $189.99, this product is discounted 15% below its 90-day average price of $223.82. It represents an advantageous purchase window compared to typical retail benchmarks.

What is the unit cost of Diono Radian 3R, All-in-One Convertible Car Seat, Rear and Forward Facing, 10 Years 1 Car Seat, Slim Fit 3 Across, Black Storm?

The normalized unit cost for this 1 count package is $249.74 / count. Tracking cost per unit allows parents to accurately compare value across different box counts, mega packs, and competing brands.

How can parents save more money on Diono Radian Car Seats?

To maximize savings, look for Amazon Subscribe & Save options to unlock 5% to 20% off, compare multi-pack unit costs, and utilize BabyPriceWatch to track historical price floors so you buy during promotional dips rather than at peak retail.

What age or stage is this Diono Radian product formulated for?

This product is designed for Infant to Child (4-65+ lbs). It is manufactured to meet pediatric guidelines and verified consumer safety ratings within the Travel & Mobility Gear category.

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