4spu.com is a portal for organizing your Rakuten SPU strategy with practical tools and current campaign context.
Analyze quantity and days from titles, comparing against median benchmarks to spot great deals.
A complete breakdown of the true cost per sheet for baby wipes, covering thin, thick, and flushable options. We independently analyze the actual sheet counts in bulk cases (e.g., 80 sheets × 12–36 packs, or 1,000–3,000 sheets total) to find the best value and smartest deals.
Compare unit prices per 100ml across major Japanese beer brands (Asahi, Kirin, Sapporo, Suntory), craft beers, and low-malt beverages in 350ml/500ml cans and bottles. Find the true best value and market medians for 1-case (24 cans) and 2-case (48 cans) bulk orders on Rakuten.
A comprehensive comparison of the actual price per piece for cup-inclusive innerwear, including camisoles, tank tops, half tops, and shaping bra camis. We independently analyze bundle deals and coupon discounts to objectively determine which products offer true value for money.
Compare the real cost per 100g of broken chocolate and gourmet confectioner chocolate on Rakuten. Objectively evaluate the best deals on milk, bitter (high-cacao), and white chocolate in large packs (500g–2.5kg).
A curated comparison of popular gift catalogs for weddings, baby returns, memorial thank-yous, and seasonal occasions. Easily explore price trends and top picks across general, gourmet, designer, and experiential gifts.
Compare daily effective cost for 1-day, monthly, and natural-look color contact lenses. Instantly identify high-value deals vs. market rate.
Compare dishwasher powder, gel, and tablet detergents by actual price per wash, normalized across multipacks, refill pouches, and bulk sizes.
A comprehensive comparison of the actual price per unit for leading electric toothbrushes (Philips Sonicare, Braun Oral-B, Panasonic Doltz). Objectively evaluate sonic, oscillating/rotary, ultrasonic, kids, and portable battery models on Rakuten by filtering out replacement brush noise.
Compare genuine and compatible replacement brush heads for Braun Oral-B (iO / PRO), Philips Sonicare, and Panasonic Doltz by effective price per brush head on Rakuten. Filter out starter sets to evaluate true running costs.
A comprehensive comparison of the actual price per 100ml for fabric softeners, from fragrance-focused and deodorizing formulas to additive-free baby options. We independently analyze the volumes of extra-large refill pouches (1,200ml–2,000ml) and commercial-size containers (4L–5L) to objectively identify the most cost-effective deals.
Compare hand soap prices on Rakuten standardized to cost per 100 ml. Key tips on finding the best value through bulk multipacks, jumbo refills, and commercial sizes.
Compare effective per-lens prices for 2-lens sets and single lenses. Easily spot best-value deals vs. physical store benchmarks (approx. 10,000 JPY/lens).
An objective comparison of actual prices per unit for top instant cameras and disposable film cameras on Rakuten, including Fujifilm instax mini, SQUARE, WIDE, Evo, and QuickSnap. Standalone films and photo processing services are filtered out to highlight genuine camera deals.
A comprehensive cost-per-load comparison of liquid, pod, stick, and powder laundry detergents. We independently analyze bulk sets, large refill pouches (1.5kg–2.5kg), and commercial sizes (4L–10kg) to objectively highlight the best value products.
Compare effective monthly costs across top menstrual cups and discs (MeLuna, Nopra, feminak, Flex Menstrual Disc). Objectively evaluate multi-year reusable medical-grade silicone/TPE cups (~30–130 JPY/month) and convenient single-use disposable discs (~4,900 JPY+/month) on Rakuten.
Compare the real unit price per 100g across white rice, brown rice, barley, and low-protein care meals on Rakuten. Objectively find the best deals by normalizing varying pack weights.
Compare the true unit price per 100g across Whey, Soy, and Casein protein powders on Rakuten. Objectively determine high-value products by normalizing varying package sizes (1kg, 3kg, bulk sets).
Comprehensive comparison of effective daily cost for Daily (1-day), 2-week, and color lenses. Easily spot best-value deals vs. market benchmark.
Compare unit prices per 100ml across major Japanese third-tier beer brands (Kinmugi, Honkirin, Clear Asahi, Mugi to Hop, Gold Star, Nodogoshi Nama) in 350ml and 500ml cans. Find the true best value and market medians for 1-case (24 cans) and 2-case (48 cans) bulk orders on Rakuten.
Starting April 1, 2025, Rakuten Rakuma will be added to Rakuten SPU! Earn a +0.5x bonus for the month by selling a total of ¥2,000 or more on Rakuten Rakuma. Max SPU can reach up to 18x!
Subscription & Regular Delivery purchases on Rakuten Ichiba, which were previously ineligible, are now eligible for SPU benefits.
The SPU benefits for using three services—Rakuten Mobile, Rakuten Mobile Carrier Payment, and either Rakuten Turbo or Rakuten Hikari—now require entry.
Rakuten K-Dreams has been added! Earn a +0.5x bonus by placing total bets of ¥10,000 or more per month. The maximum SPU points have increased from 17x to 17.5x.
4spu.com keeps your Rakuten strategy practical with updated context, planning tools, and campaign-aware guidance.
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