Anonymous asked: can we get an update with duelist alliance cards please on the app.

We will soon be releasing an app update that includes an includes all of the Duelist Alliance cards in its internal database.

In the meantime however, you can manually update your app to include these cards by going to “Settings”, and then tapping the “Update Cards Database” button.


Anonymous asked: Absolutely love this app but card prices aren't always accurate i.e. Beelze of the Diabolic Dragons is listed as lowest price $3.17 from EBay. I double checked and the lowest price is actually $8.25.

Thank you for bringing this to our attention!

The issue with the price mismatch was caused by the listing title having the phrase “plus 3 cards” in it.  This was causing our eBay scraper to evaluate this listing as being for multiple cards (i.e. something like “3x Beelze”) which in turn caused it to divide the total price by 3 in order to evaluate what the exact price per card actually was.

We have updated our scraper to be able to handle cases like these from now on, and the price mismatch will not happen again.

Thank you again for bringing this to our attention. 

The best way to improve Yugioh Prices is to let us know when you find something wrong so we can fix it!

Downtime is Over!

Our battery backup blew out on us this morning, and we just got it fixed up again. The website is now back and running. Sorry ffl the downtime everybody!

Server Maintenance

We’re doing server upgrades and will be back online soon, sorry in advance for the inconvenience!

Lowest Card Price is Now Picked Using Ebay Listings

With the release of the Yugioh Prices Android app, it’s now time to begin a new round of development on the website!  To get the ball rolling, we are changing up the rules we use for determining what the lowest price for a card is.

Up until now we’ve just been going off of whatever the lowest priced listing our API could find was, but after talking with some of our users we’ve decided to tweak this so that the lowest price for a card is now determined by the lowest priced eBay listing.

There are a couple reasons behind this decision, the first of them being that the lowest price shown for a card is intended to represent the most accurate assessment of what that card is being bought and traded for person to person, not vendor to person. The second reason for this change is that due to the technical limitations of the APIs we have to use to get listing data from certain vendor websites, we are unable to automatically factor in shipping costs for cards, which in turn can sometimes throw off the lowest price for a card because a vendor will pad out their margins on a sale through their shipping costs.

We aren’t sure yet if we’ll be keeping this policy forever, but for now we’re going to try it out and see how our users like it.


Anonymous asked: I sell a lot of yugioh threw your app on my iPhones but for some reason I'm having a problem linking this app to my ebay so I can sell my cards threw the ipad. Any help please?

Ebay’s authentication token system can be pretty finicky at times, especially on a mobile device.  If you can’t seem to get your app to authorize with eBay, the best solution is to simply reinstall the app.  This (should) clear away any lingering cached tokens that are mismatched with what eBay’s API servers have on hand.

Introducing the Yugioh Prices Vendor Affiliate Program

What is it?

The Yugioh Prices Affiliate Program is a special program for online vendors and local card shop owners that grants direct access to the prices data for every single card on Yugioh Prices. This data is updated hourly, and is available to all affiliate program members in the form of a CSV file.

How does it work?

After you’ve signed up for the program, you will be issued an affiliate key that you can then use to download prices data. To download prices data all you need to do is use the following URL.

How much does it cost?

Membership in the Yugioh Prices Affiliate Program costs only $99.95 a month! No long-term commitments are required to join the program, and you are free to cancel your membership at any time, no questions asked.

Sign Up Today!

To join the Yugioh Prices Vendor Affiliate Program, just fill out this application form.

Are reprints of Dracossack, Exciton Knight, and Silent Honor ARK in the works?

From an article posted by The Yugioh Organization,

The Mega Packs are a Best-of set comprised of cards from Lord of the Tachyon Galaxy, Judgment of the Light, Shadow Specters and Legacy of the Valiant. Each Mega Pack contains 16 cards: 1 Secret Rare, 1 Ultra Rare, 1 Super Rare, 1 Rare and 12 Commons

Could this mean that Mecha Phantom Beast Dracossack , Evilswarm Exciton Knight, and/or Number 101: Silent Honor ARK  are about to get a reprint?

It’s still too early to say for certain, but the possibility definitely exists!

We’ll all find out more as the end of August and the release of the 2014 Mega-Tin Mega-Pack draws closer!

Scaling - Fact or Fiction?


Scaling (the act of weighing booster packs to determine whether they contain valuable cards) has been seeing a lot of discussion online recently, and so we here at Yugioh Prices thought we would take a crack at it ourselves to see whether or not it really works.

The driving principle behind scaling is the idea that “valuable” cards (i.e. Super Rare, Secret Rare, Ultra Rare, Ultimate Rare, etc.) weigh more than “non-valuable” (Common and Rare) cards do.  So the first thing we needed for our experiment was a scale that was both accurate in its readings, and precise enough in the number of decimal points it measures to in order to successfully determine which booster packs contain valuable cards.

We ended up picking up an American Weigh Scales GEMINI-20 Portable MilliGram Scale on Amazon for $23.64.  The reason why we chose this particular scale was because it was designed for measuring small gems and granulated substances, and it is capable of measuring items as light as 0.001 Grams.

We also picked up 1 Booster Box of Primal Origin, and 5 random booster packs of Abyss Rising from our local Super Target to use as our test subjects.

The process we followed for our experiment was pretty straight forward.


  • We numbered each booster pack individually, and then weighed them two times using our scale.
  • After weighing each pack we concluded that packs number 5, 7, 9, 11, 12, 16, 21, and 23 contained valuable cards, while the remaining booster packs contained worthless commons and rares.
  • We then opened each pack and noted the cards it contained, making sure to take a picture of each for the record.
  • We also performed the same steps for the five booster packs of Abyss Rising we had purchased, and concluded that only one of them likely contained any valuable cards.

The results of all of the weight measurements for each pack we opened, along with whether or not they contained any valuable cards can be found in this PDF file.  We’d post them directly to our blog, but for one reason or another Tumblr just isn’t the ideal platform for uploading scientific data.

In the interest of sharing our conclusions however, we’ve included screen caps of the weight results for booster packs that contain valuable and non-valuable cards




  • Setting aside the moral and ethical aspects of it, Scaling DOES work.  Using our scale we were able to accurately predict which booster packs contained valuable cards, and which booster packs did not.
  • The statistically significant decimal place for determining whether or not a booster pack contains valuable cards is the second one.
  • When scaling booster packs (at least for Primal Origin), you want to find packs that weigh at least 12.35 Grams.
  • The scale that we used for this experiment has a maximum weight capacity of 20 Grams, which is not enough if you plan on Scaling booster packs that are individually packaged in cardboard display cases.  If you plan on Scaling packs like these, we recommend that you use an American Weigh 100g x 0.01g Digital Scale instead.

We are currently experiencing some downtime due to our server’s ISP, but we will be back soon.

And… we’re back!  Sorry folks.