3 rules for ebay
1,always pay with paypal unless its cash on collection and dont hand the cash over untill you are happy with the item.(no matter haw much you want the item if the seller decides they want a different type of payment decline it there more then likely up to something.
2,when selling always send via recorded delivery or a service which will cover the cost in the insurance.the buyer is paying for the service not you.keep all your receipts for proof of postage in a safe place.
3,stick to selling in the uk overseas buyer there are plenty of them most good people but you can guarantee you will get 1 that try it on!costs more for posting signed for is even more and theres no tracking unless you use a courier which gets expensive.simple no no unless you think you can trust them.
ive stuck to these 3 rules for years never had any problems
also another good thing set of weighing scales and this link
http://pricefinder.postoffice.co.uk/...ar=pricingcalc
work out your pnp costs before listing it sorted.