I wouldn't buy on Ebay. Some fake stuff on there. Only buy from a direct dealer that gets their bullion from the major mints. SD Bullion, APMEX, and JM Bullion are very safe. I haven't used them but Miles Franklin is very reputable but you have to call direct to order. They had some silver Britannia coins a couple of days ago but most likely out by now. It is really too late to jump on now. In these situations you have to be buying when nobody is talking about silver. As you are seeing, buying at any price is almost impossible now because the supply is gone.