hmmm Thats a good question, It's hard to say with out seeing pics to assess actual condition.
A bone stock 10/22 is $289 new. A factory target model is $500 ish. (new prices)
A modded 10/22 is worth what you can sell it for.....
To somebody that wants to do the exact same thing you did, but hasn't bought any of the stuff, you could get 75% of what you put into it. But you could be waiting a long time.......
IMHO....
BC barrels do very little to the "value" of a 10/22, they are better than stock, but way better can be had for not much more $$ (usually less $$). So add little no extra $$ for them.
The stock is worth $75, The bipod is worth $70, The VQ parts and mag release are worth $55 (used)
So if the used 10/22 is worth $200 and the after market parts are worth $200.....
QED: I figgure your rifle is worth between $400 and $450, sight unseen.
Hope this helps.......