Hi, I'm looking into getting my first handgun. I already decided on the specific gun (Sig P250 .45 ACP). Looking online, I've found better prices than in a local gun store. I'm in contact, through email, with someone offering a pretty good deal on a lightly used handgun that I noticed in an online classified ad. How safe are transactions arranged over the internet? I found that a lot of sellers want you to send a check or money order. What's stopping someone from just keeping your money and not shipping the item? I don't mean to sound so negative, or to insult anyone, but using ebay in the past has made me very cautious about these things. Thanks in advance for any advice.