I've been browsing around, online retailers (APMEX, MCM ect.) seem to be around 15-16x face plus shipping and eBay seems to be about 14x face plus shipping. Personally I just got $10 face for $140. So what are you guys paying?
Well, I went to a local auction house for something completely different/non-coin related, but ended up with a roll/$10 face of 1964 Kennedy half dollars for $96 after the juice and taxes. That was last Tuesday. IIRC melt was about $6.05 that day (vs the $6.21 according to the NGC melt price list just now). It was the last coin lot before all the other stuff started and the 'coin people' had apparently stopped paying attention. Plus the internet bidders just weren't buying (the BP is 5% lower by bidding in person and paying cash/check...but still, folks were snoozing at the keyboard AND in the room). I was not disappointed! Plus I got the other thing I'd really gone shopping for so cheaply that my grand invoice total was $136--or still a respectable price for the roll of silver alone. It was a good day.
Try providentmetals.com and SDbullion.com as well, I have not checked their 90% silver but I remember it was not too bad. Also try JMbullion.com
I just paid 13x face for a few silver proofs that were slightly impaired. 12.5x-13x I think is the general.