If you are interested in more than 1 item, I will do combined postage discounts, just wait for an invoice before paying.
to try and avoid the possibility of items getting "lost" or going "missing", I generally only use signed for or tracked postage options. I try and keep costs as low as possible but please be aware that Ebay not only take 10% of the auction price from sellers, they also take 10% of the postage price. This means if an item costs £8.00 to post, Ebay will take 80p of that in fees, so I have to adjust the p+p price to cover that. On the flip side, I don't add anything extra for the cost of packaging. (I have asked at my local Post Office if I can have a 10% discount every time I post something, but unsurprisingly they told me to p#ss off!)
payment to be made within 2 days of auction ending, if payment is going to be longer than 2 days, I am OK with that as long as you message me and let me know. Unfortunately I have had to introduce this policy due to spending way too much time chasing after non-payers.