I have a Sig Legion P226 SAO 9mm frame only....no slide

Opinions on value for this....

$100 AND I'LL TAKE IT.

Seriously it all depends, is it stripped or complete? Whats the condition?

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>

Oh no. Nuke time.