I have a chance to buy a Beretta Mod. 92FS from my boss. He wants something different, this gun is in excellent condition and shoots great. I've shot it a few time to attest. This would make a good addition to the collection if the price is right. I've never owned a semi before, is this a good choice? Ser # is BER 170580 Z It has two 15 rd. mags and a really nice shoulder holster like a detective would wear. What should I pay for something liek this, with or without the holster? He hasn't let me know what he wants yet.