- What is mobsaver?
- What do I need to use it?
- How do I use mobsaver?
- How much does it cost?
- What if I have a question that isn't covered here?
- What is a UPC?
- What is a ISBN?
- So which one do I use to look up items? UPC or ISBN?
- What kind of items can I look up?
- What prices are sent via SMS?
- Why is the Amazon new price sometimes lower than the used price?
- Do I need to sign in to use mobsaver?
- How do I sign in for the first time?
- I can't seem to sign in with my mobile number and password.
- How long are items kept in my saved list?
- Is there a limit on how many items I can have in my saved list?
- How do I change my password?
- What if I forgot my password?
Introduction
Price Lookup
Signing In
- What is mobsaver?
- What do I need to use it?
- How do I use mobsaver?
- How much does it cost?
- What if I have a question that isn't covered here?
- What is a UPC?
- What is a ISBN?
- So which one do I use to look up items? UPC or ISBN?
- What kind of items can I look up?
- What prices are sent via SMS?
- Why is the Amazon new price sometimes lower than the used price?
- Do I need to sign in to use mobsaver?
- How do I sign in for the first time?
- I can't seem to sign in with my mobile number and password.
- How long are items kept in my saved list?
- Is there a limit on how many items I can have in my saved list?
- How do I change my password?
- What if I forgot my password?
Introduction
mobsaver is a SMS price comparison tool.
Compare prices for FREE on Amazon and eBay while you're out shopping via text messaging.
You need a mobile phone that allows for text messaging to an email address. Most current phones support this feature.
Simply text message the item ISBN or UPC to
and you will receive the Amazon and eBay prices via SMS. Use the ISBN if the item is a book and the UPC for all other items. Put the number in the message body. No message subject is needed. Tip: save the address in your phonebook so you don't have to re-enter it each time.
mobsaver is a free service but your mobile carrier may charge for text messaging depending on your service plan.
Feel free to send questions via the Contact page.
Price Lookup
The Universal Product Code (UPC) is the 12-digit industry-standard unique identifier used on all manner of goods for sale in North America.
![]() | Standard size UPC barcodes look like this. In this example, the UPC is 027242675407. Don't forget to include the little numbers on the sides for a total of 12 digits. |
![]() | UPC barcodes on smaller items like CDs look like this. In this example, the UPC is 602498804803. |
The International Standard Book Number (ISBN) is a 10-digit number that uniquely identifies books and book-like products published internationally.
![]() | The ISBN is located above the barcode. In this example, the ISBN is 0123456479. Note that the last digit can sometimes be the letter "x". |
Use the ISBN if the item is a book and the UPC for all other items.
Pretty much any item that Amazon carries -- from books and CD/DVDs to electronics and software.
The lowest new and used Amazon prices including those offered by Amazon Marketplace Sellers. Also sent is the current bid price on eBay. If there are more than one item available on eBay, a price range will be sent.
This situation can occur when the item is sold by an Amazon Marketplace Seller at a deep discount.
Signing In
There is no need to sign in if you wish to simply look up prices. Signing in does however allow you to view your saved list of items that you have looked up prices for.
Before you sign in for the first time, your initial password is sent to you along with any price lookups. If you have deleted those message(s) and no longer have your initial password, please see "What if I forgot my password?" below.
If you have created a text message nickname with a wireless carrier such as Verizon, you will need to enter that nickname instead of your mobile number. If the problem persists, please contact us and we'll be happy to help you out.
Items stay in your saved list until you remove them.
There is currently no limit on the number of items.
Sign in first and then go the Change password page.
Enter your mobile number on the Forgot password page and a new password will be text messaged to you.



