If you do a lot of transactions PayPal starts to think you are a business and holds funds for a while. I had a buyer pay me by e-check into PayPal and all hell broke lose. PP though I was a business and I had a lot of sales and purchase of audio gear so it did not look good. I called PP and sorted it out but I was messed up for about a week.
I had babysitter payments and other regular bills that were on hold until PP could reset my account after about 5 days. Lesson learned and luckily I do not plan on selling or buying any more audio gear.