My return was $768 and I ordered $39.99 package.. why did I only get $688 return?

Did you have the fees deducted?  
Deluxe is 39.99
State is also a separate 39.99 in all versions above the Free Edition
If you select to have the fees deducted from your refund there is an EXTRA 39.99 Refund Processing Service charge (44.99 for California)

So you could have 2 charges of 39.99 for 79.98 (or 84.98 for Calif)
Or you could have 3 charges of 39.99 for 119.97 (124.97 Calif)

I live in Florida.. no state taxes

There was an EXTRA 39.99 Refund Processing Service charge.  
So 39.99+39.99= 79.98

You could have paid the 39.99 with a credit card to avoid the extra charge.

You should have seen this screen showing the charges