OK game on $110 from me. Not seen any for sale so...my best guess is a new complete gun is about $1000, you need at least a 226 slide (about $300-400) to have a working gun and you have a $600 lower. Minus something for the whole partial mess and it can't be a Legion since that slide is unobtanium and used I would guess in the $350-500 range it would sell. But of course you can get an SAO lower (not legion but in SAO its not a big issue for less). Me personally I'd have a buy it price around $400 as I have been converting SAO legions to take a milled RMR and I don't want to cut the original slide so I have been using other slides. FWIW>
“So in war, the way is to avoid what is strong, and strike at what is weak.”