(I have to increase the price to compensate for the commission fees in this site...)
Although I have much more ISK for sale than 10B, but I have to limit the amount for security reasons. Here's why...
Every ISK transaction will be logged and kept forever in the server, so there's no 100% safe method to transfer ISK unless I am an official staff which can delete the record from the server.
We can only reduce the risk of being caught by complicating the transaction.
So, yes, Simple method = Unsafe method
Complex method can make it safer, but it also requires the buyer to do a little more steps. And we require a better communication tool (the messaging system on this site is non-instant, I have to manually refresh the page to check new messages...)
Generally I can't disclose the steps here publicly (you know why). I can only tell you what these steps are after you have placed the order. But some of you may not like these steps and may request a refund right away, which will affect my rating...
So, if you prefer simple method, then I can only reduce the risk (although not much) by limiting the amount in each transaction.
If you want to buy a large amount (like 100B or more), well... let's brainstorm for a better way together, be creative ;)
Finally, to speed up the transfer a little bit, you'd better specify your preferred method when you place the order, and take your own risk...
If you did not specify a preferred method or I can't contact you within the first hour, then I will default to simple contract method.