Cash for Gold and Other Precious Metals Shopify E-commerce Site with Price Auto Updates

Avg Bid (USD)
Project Budget (USD)
$250 - $750

Project Description:
Details: Shopify website design with a special APP. This is for a store in which silver, gold, platinum and palladium bullion and coins, etc. will be sold. The product prices need to be calculated dynamically so they are always correct.

-Calculations must be: Product Price = precious metals price + markup
-We need a to acquire a precious metals api feed, preferably free, but must be correct and current at all times. There are a few out there, such as: or
-Prices need to be updated continuously, but once a product is placed in the cart it should hold the same pricing for several minutes, long enough to complete the transaction.
Need to set up some sort of fail-safe if the API fails? (i.e. call for pricing message?)

- We also need a "ticker" on each page, similar to what's shown in the light blue bar on this page:

Silver Bid: 27.22 Ask: 27.32 Change: -0.08 Updated: 7/17/2012 9:39:51 PM

Skills required:
eCommerce, Graphic Design, HTML, Shopping Carts, Website Design
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