James,

Thanks for the kind words. I appreciate it and enjoy helping store owners increase their sales.

As far as Google Analytics goes, no, there is no bug that limits transaction amount.

There are instances however when Google will not track a transaction. You see, GA is a JavaScript based tracking system (as are most). Because of this, it can only track users that have JS turned on in their browsers. If a user has JS disabled (and yes, many do this) then no matter what you do, the transaction will not track (in fact that visitor will not show in analytics at all.)

There is no work around for this, just the way JS tracking works.

The other reasons a transaction might not be tracked is because the user paid with a system like PayPal (for example) and they were not returned to the originating website to trigger the ecommerce sale in analytics.

This can happen it return urls are net set correctly on the paypal end or if you require the user to click a button (like "return to merchant") after the sale. If the user does not click the button, the transaction will not trigger in analytics.

This is the case with any payment system which has this type of method of paying (i.e. Worldpay is another that has trouble tracking GA transactions.)

Let me know if that helps.