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89SCORE

Barron's AP Biology with CD-ROM

Amazon

89SCOREGreat dealDeal Score 89/100 · High confidence

$29.99$46.56-36%

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DDD Buy Intelligence

36% below its 90-day average ($46.56); 4.6★ across 622 reviews.

Current price
$29.99
Typical price (90-day avg)
$46.56
30-day average
$44.38
Lowest recorded
Not enough data yet
Product rating
4.6★ · 622 reviews
Seller
Amazon marketplace listing
Availability
in stock
36% belowDDD True Discount — vs. its 90-day/30-day average

Why this score

FactorPointsEvidence
Historical price25/2536% below its 90-day average ($46.56)
True discount20/2036% off its typical price
Lowest-price proximity—/15No recorded low yet
Product quality13/154.6★ across 622 reviews
Seller trust9/10Amazon marketplace listing
Competitor price—/5No other retailers tracked yet
Community—/5No community votes yet
Availability4/5in stock

High confidence: this score is based on 5 of 8 evidence types (75% of the maximum weight). Missing: lowest-price proximity, competitor price, community. How Deal Score works

no price history chart yet — we record this price daily from now on

Price tracked via Keepa's Amazon price-history data; price and availability are set by Amazon and can change.

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