There were 158 backers of which 85 selected the $70 Thop's Big Package, so it's pretty rare.
KickstarterI'd suspect that you could at least get the original $70, maybe $150 or more, if offered in the right place. I have this particular package and it is top-notch.
It does look like there might be at least one add-on to this package. I can't be sure without digging out my set to compare. Will do so if I have a chance.