Based on our record, Keepa seems to be a lot more popular than NotificationX. While we know about 80 links to Keepa, we've tracked only 1 mention of NotificationX. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I also recommend checking amazon.co.jp out as you'll have the option for certain products to ship to a konbini closest to your lodgings for pick up (they e-mail you a QR/barcode and you show it to the attendant; if you miss the pick up, they automatically return and refund you). This is especially useful if you're short on time and will help you streamline your itinerary so you're not going super far out of your... Source: 6 months ago
When buying off Amazon, always use https://keepa.com/ to track the price and get the best deal. Always read the seller reviews (product reviews are usually fake and useless). Source: 6 months ago
PSA: You can use a tool like Keepa to view historic prices of items on Amazon. It's a browser extension that injects into Amazon's website underneath the initial product listing. Will show you normal prices, the used prices, if the price was a lightning deal (a la Prime Day etc). Source: 11 months ago
Keepa.com is actually better. I have been using camelcamelcamel for years, but it started to NOT show the correct historic for a few items. But the keepa extension solved it. Source: 12 months ago
Keepa.com is my go to site for price history. Source: 12 months ago
This plugin. https://notificationx.com/ however never used it. Source: about 3 years ago
Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.
Nudgify - Nudgify is a Social Proof App that includes FOMO, Urgency and Review Nudges. Adding Social Proof notifications to your site helps you build trust and increase conversions on Shopify, Wordpress or any other platform.
PriceSpy - PriceSpy helps you save money when shopping online.
SocialProofy.io - Social Proofy is a marketing platform that applies the psychological concept called social proof to help businesses.
Savelist - Found products you want but not ready to buy?
ProofGain - Supercharge your conversions with a simple social proof tool