Hi buddy,I've been looking into offering this service in the UK but frankly there's been a much greater level of interest in people interested in buying Bitcoins for cash rather than the other way around - I'm sure you'll have more joy than me though because being American you have a much larger potential customer base.If you're selling via SR you're going to have to take into account the sellers' fees when offering cash for sale. Fortunately you can list prices before fees and let the website do the number crunching for you.I did see there's a vendor on SR named Uglysurfer who sells cash via SR. I still have my notes from when I first started offering my service in the UK a few months ago and as far as I can see his rates were as follows:10 dollar bill : $14.52 (17% mark up)20 dollar bill : $23.96 (15.5% mark up)50 dollar bill : $59.14 (14% mark up)100 dollar bill : $116.16 (16.16% mark up)Like you I think he isn't so much interested in profiting from selling Bitcoins so much as getting them at a reasonable rate in order to make investments, particularly when you take into account the SR seller fees.Speaking of which, in case you don't have them, SR seller fees are as follows:10% of the first $508.5% for amounts from $51 - $1506% for amounts $151 - $3003% for amounts of $300 - $500The commission is banded so if for example you were listing an item for $110 the commission would be $10.10 not $9.35 (10% of the first $50 = $5 plus 8.5% of the remaining $60 = $5.10).If you need any help, feel free to send me a message. I've been asked to offer this service too but am still trying to get my head around offering customers a competitive rate.All the best,V.