I don't know where y'all are getting the 180 day number from. My PayPal dispute options only go back for 90 days worth of transactions. If yours goes to 180 days then great. It really sucks for guys on a time crunch
I had actually already filed a dispute with the bank that holds the credit card I used, but I cancelled the dispute when Jeremiah responded in this thread. Thankfully, they won't hold me to a deadline for disputing the two charges and told me I could call back and reinstate a dispute at my discretion in the future if I don't get my product.