Estimate the value of my NES games

[Manhattan Sports Club]

Copy and pasting this from my sales list:

3D World Runner (cart, B condition) - Make Offer
Adventures of Lolo (cart and box only -- ex-rental box, B condition) - Make Offer
BattleToads (cart, B condition) (C) (VG) - Make Offer
Bucky O'Hare (cart, B condition) - Make Offer
Devil World [text label version] (jap, cart, B condition) - Make Offer
Fantasy Zone [w/ tengen sleeve] (cart and manual, B condition) - Make Offer
Gyromite [no adapter] (cart, B condition) - Make Offer
Isolated Warrior (cart, A condition) - Make Offer
Kid Niki (cart, B condition) - Make Offer
Layla (jap, cart, B condition) - Make Offer
Little Nemo (cart, D condition) - Make Offer
Legend of Kage (cart, B condition) - Make Offer
Legacy of the Wizard (cart, A condition) - Make Offer
Legend of Scheherezade (cart, B condition) - Make Offer
Maniac Mansion [w/ styrofoam bar and poster] (complete, A condition) - $30
Mendel Palace (cart, B condition) - Make Offer
Monster Party (cart, A condition) - Make Offer
Robo Warrior (cart, B condition) - Make Offer
Section Z (cart, C condition) - Make Offer
Spot: The Video Game (cart, B condition) - Make Offer
StarTropics (cart, B conditon) - Make Offer
Teenage Mutant Ninja Turtles (cart, B condition) - Make Offer
TMNT: The Arcade Game (cart, B condition) - Make Offer

Would like an estimation of the value of these games as I am largely out of sync with the NES scene.
A = almost mint condition
B = near mint but with notable minor flaws
C = very noticable cosmetic issues but intact
D = barely intact label or comestic appeal or absent

[recorderdude]

I'd hate to sound offensive, but I've seen quite a few threads such as this which generally equate to "look up the values of this laundry list of easily-priceable games in this kind of condition because I'm not up to putting in the effort myself". I'd understand if the information was not in easy reach, such as pricing on prototypes, strange accessories, carts from odd regions like australia or germany, or odd systems like the Super A-Can, but we're talking about american NES games and a few japanese imports, here. You can use rarityguide.com to get a ballpark estimate of the values for the american carts and find all of them exactly from completed/sold listings on ebay.

Again, I bear no ill will towards you or anyone who's posted these kinds of threads before - I just find them rather unnecessary.

If this is such a situation where you were unaware of these methods, however, I sincerely apologize and hope you can use them well to find the values you desire.

EDIT: Taking a brief look, I can imagine layla difficult to price, as there's only one current and one ended auction at this point. All of the others should be reasonably easy to find values for, though.

[MachineGex]

http://videogames.pricecharting.com/console/nes?sort-by=name

This is all you need.

[skaar]

http://i.imgur.com/WJ9qB.gif

[Manhattan Sports Club]

I apologize greatly, thank you for understanding.