Dear currymudgeon70,
It is unfortunate that the sellers you have contacted didnt respond.Probably they are out of station or some other reason can be there.Most of the sellers on ebay are responsible and would reply for your queries in 24 hours or in a couple of days.I do not know what product you are looking for.But you have many choices and many more sellers on ebay,so you need not be disappointed just bye few instances alone.
Paisapay is the most safe and secure form of online payment on ebay.But like any system/scheme can have its own drawbacks, for ex:some more banks are yet to be included.You may be be seeing some of the issues discussed on forums ,probably more from the sellers side.I guess you dont need to worry ,and if you have any doubts,you can contact eBay customer support and get it resolved before deciding to purchase.
Wishing you a wonderul shopping experience of eBay!