Sure there is, when you're trying to inflate the value of a game you hoard as many as you can and then put in your piece list that it is super rare and charge 3x more for it. There's a certain guy that had scooped all of the Willow pcbs a couple of years ago and all of a sudden on his "official" price list the game tripled in value.
Interesting. I had a WIllow board about 4 years ago. I sold it because it had issues where it looked like a dirty nes cart (with the vertical lines in game), on certain backgrounds. I assumed I would pick it up again, and looked about 2 weeks ago and was not surprised that it jumped in value. Actually it looked like it tripled. It's a good game, but as far as arcade games go, it's not worth over $70.00 and can be MAME'd any day of the week perfectly. Other then my Progear CPS2 cart and my maybe 30 remaining Neo Geo MVS games I feel I am pretty much done with arcade stuff. I have a few titles I still want in my sig. But I will probably only pick up half of those in all reality, and a 161 in 1. If a Neo Flash cart comes out they're all gone.
I have been trimming my collection since about 6 years ago when I needed to replace my engine in my car. I went from around 700 games, to barely over 100 games. And even right now I have stuff on eBay trimming more. I have been through this process several times and I can give you some pointers. Obviously the best advice to avoid being a hoarder/collector is emulation and everdrives. But here we go.
Life is too short to spend all your time collecting, and not playing games. I challenge you to make complete lists of every game you want (I like Excel for its addition function), then look at the number of games, and the value of all the games you want and add them up. When you take into consideration other hobbies, music, movies, books, and other hopefully outdoor activities, you will see the value of all the games you want, and can estimate the number of years it would take you all to play through and collect all of them. Neither is realistic. I will quote True Detectives Rust Cohle in saying "Life's barely long enough to get good at one thing." So spend more time playing and doing other things. Don't waste precious years collecting. I figured up all the games I wanted with what I felt was a conservative list and it was still over $20,000, and I would have to purchase multipe games a week over MANY years. When you notice some of those game command hundreds of dollars, and the majority floating in the $60.00-$100.00 range = Not happening.
Since then I have devised a system. If I have had a game over 2 years and never touched it, it's sold. If it has been over 2 years, and I have played it I might keep it. But it has to meet certain criteria. For the most part it has to be a game when I look at my wall of games for a specific system, it is one of the games I always have a tough time deciding whether to play or not because it's so good. For example, I look at all my neo geo games, I see 30-ish games, and I always want to play Last Blade, Magical Drop 3, Metal Slug, and a few others. I never play NAM-1975.... SOLD, because I have no burning desire to play it, even though it's a great game. Ninja Combat SOLD, KOF 94,95,99,00,01,02 SOLD.
That is the first part of my system. the second is a little more intricate.
First - sell games and buy everdrives. Only collect the best 15 games for each system. Even this is generous. The price does not matter, if it's a $5.00 game or a $150.00 game it still counts as a game. Don't say "it's so cheap I can justify it". This is how you end up with thousands of dollars in mediocre games, and a room full of crap.
Second - Everyone has that system they are partial to. Mine is the NES. I allow myself to collect more games for the NES or any system really, but at a comprimise. If I go over the 15 game limit, I must remove 1 game from another system. For example I widdled down my wanted sega cd games to 8 total. That gives me 7 more games to collect for other consoles that I like more. Which is how I can justify a few more neo titles at this time. But I will be trimming more soon.
Third - Don't cheat by adding 15 more games to a system by saying you hate Jaguar, or CDi and will never collect for them. Then it would be easy to add hundreds of games. Only count systems you have a active desire to collect for. Your brain is going to look for ways to justify buying more games. DON'T LISTEN TO IT!!!
4th - Collecting complete games in cardboard boxes, and trying toget full libraries is dumb. Also, collecting a game just because it's rare is dumb. Sorry to those of you that collect this way but it's pointless. I can understand wanting a complete genesis game, or cd based game because it's easier to store them, and doesn't command a ridiculous inflation in price. But in all reality you're paying double for a crappy cardboard box and a black and white crap manual. Learn what games have good mauals (download a NES manual set), and just go for the loose cart with the manual. Like Zelda 1, Kid Icarus, etc... have sweet manuals, Mega Man NES games have suck manuals, and the box art is the same as the label. Plus you can print out high quality inserts and get much cheaper plastic boxes that make them look better, and store better anyway. I learned this with TurboGrafx the hard way. I had a near complete boxed anglish collection and they were ugly. I didn't even keep them in the boxes because it was a pain in the ass to get them out without damaging the box, so they took up double space anyway. Now I have 4 english turbo games. Y's books 1 and 2, ys 3, lords of thunder, and gate of thunder. I will get Exile, and if I ever luck out I would get Dynastic Hero. Then I would be done. I desire a mere 13 Japanese games, which I almost have all of.
Finally - Respect your collection. Don't collect a game, or justify keeping a game because it's "good". Like I said before life is too short. There is no time to play every single good game. Strive to collect the "best" games. Games that you would rate at least an 8 out of 10. Hell, even then you will see after you learn to trim the 8's have to go. Life is just too short to play average games, or even above average games. Don't disrespect your collection with some shit like a $100.00 Neutopia 2, when you don't even have A Link to the Past, Ocarina of TIme, Wonder Boy in Monster World, Dragon's Curse, and Landstalker. And don't disrepect your awesome NES collection with some shat like Stadium Events when Simon Belmont rapes him in the ass every night.
I think the way it is easy to get a large stupid collection is to be like "Neutopia 2, that's a great TurboGrafx game"! BUt when you really think about it, will you really be playing Neutopia 2 when you have 20 other better action RPG's? WHen you think outside a specific console, you will see that even though Neutopia 2 is a decent game, you will never play it when Secret of Mana, and every other wonderboy game is lying around. Therefore it is not justifyable to keep when you take into consideration a universe filled with hundreds of batter action RPG's.
I personally think it's just absurd, looking at these youtuber's that do reviews with wall of crap like Luceinne's Quest, thousands of games they will never play. I would love to see a youtuber with a collection wall with only the top 20 greatest games in their opinion for every "good" console. Not that wouuld be something awesome.