@Trichomes
You have a good point about selling elsewhere and getting instant cash BUT I have found that if you do that you don't get so much money for your item as Ebay generally has more buyers. So personally I would rather wait a little while for my money and get more for my item than the other way around.
Also if you send trackable you never wait 21 days (most i waited was a week) and generally its when tracking shows delivery of the item + 3 days.
As for tracking you don't pay anything, you list how much you charge postage and you state how you will be sending it and the buyer pays the amount that is stated on your auction and feedback has no bearing on payment release, its only the tracking number.
As for the 'scam' factor, you are at no more risk of being scammed as paypal is holding the money and not the buyer, the buyer can only get it back again if he files a dispute for non receipt of item (would fail if you sent trackable) OR not as described (when he would have to return it at his own expense first and only if Ebay found in his favour).
Even if the funds were in your bank account and the buyer filed a dispute and won then paypal would put your paypal account into negative until you paid them back again etc etc.
But if you have found a better platform that works for you then go for it, I tend to use Ebay and another but personally find I get a higher price for my item using Ebay even with the higher costs involved.
Advice is voluntary.
Kudos / Solution appreciated.
