My collection is big, but dosen't have alot of rare stuff sadly, but after looking for a bit i found some. I used pricecharting.com to determine to what my expensive games were and these are the results. i limited to stuff that go close to 40 bucks and anything beyond that i put away.
Error - i mistake on my part for misreading something for 20 bucks
Fire Emblem Radiant Dawn Wii - my second rarest game, the disc and the manaul are both in good shape. I bought this game new during a shopping spree at Nintendo World couple years back with a game guide.
Fire Emblem Path of Radiance Gamecube - a personal favorite game of mine that i got when it was new forever ago. the disc is decent shape and the manual is still there.
Haunting Ground PS2 - the rarest game in my own collection. it also seems to be a common find for fellow kiwis. The game disc is in alright shape with a few scratch, but its plays perfectly fine. i don't have the manual since i bought used at gamestop few years ago.
Banten Kaitos Origins Gamecube- Got this during one of many game hunting trips to gamestop when they still sold gamecubes in store. Both the discs are in good shape and it even still has the manual which is also in good shape. quite the steal for 7 bucks
Pokemon XD - this game is beyond baten kaitos is price, but its remains one of the stupidly priced games. its another game i've had forever now. both game disc and manual are in good shape.
Xenoblade Wii - another hard to get for no good reason and another favtiore of my, got this at gamestop the weekend it come out. I didn't play it for what seems liek years and i somehow remained unspoiled until around 2014 when i finally finished it.
Rhythm Theif & The Emperor's Treasure 3DS - another game i enjoyed the hell out of. a friend bought for me sometime after launch. yes i am aware of the mobile version and the 20 bucks on the eshop, but physicals copies are still going for 40 bucks for no good reason. its still in good shape
Pokemon HeartGold with PokeWalker DS - why the hell is this game so expensive and hard to find its fucking pokemon. i got lucky and got it at lauch. but whatever love the shit out of this one. in really good shape
SnowBoard Kids 2 N64 - out of my loose games its most hard to come. I borrowed it from a pal years ago and just forgot to give it back him. its in rough shape, but still plays just fine.
Megaman Battle Network 6 Cybeast Gregar GBA - a surprisingly pricey game for the good old gameboy advance. i will admit i breaking my rule with this one, but 22 bucks waaay to much for a GBA game in my mind and its least talked title out of all the battle networks since it was the last. got it as a Christmas gift years back and it still plays good.
SD Gundam Force - another loose game that 25 bucks this time. its based a gundam spin off i use to watch as a kid. i remind it being stupidly hard, but then again i was pretty retarded as a kid. I believe this was a birthday gift given to by a relative. it is in decent shape.
that's about it for me. getting games has been hard for me lately. but if i ever find a great score i let you guys known.