There appears to be a bug in the shopping cart tracker in the header of the site. It looks like it sums up the price instead of the total.
Looks like the zero qty tinker kit is throwing it off.
I am seeing the same thing. It’s only adding the prices for a single quantity of each item instead of the final amount based on there being more than 1 of some items.
None of my items are ZERO and it is repeatable.