Expect the initial orders were processed w/o anyone paying much attention, but then when they started to get overwhelmed w/orders someone looked and found the nature of the misprint & it came to a screeching halt.

$50/flat is a significant error.

I think most here take advantage of good deals, when found. That wasn't so much a deal as it was a simple keystroke error. I give them a pass for honoring the initial orders and then following within their printed guidelines for errors. Just saying.