It's good to have a goal, and a list of what you want, but don't have it very strict and leave room for impulse buys. Also set a budget, and leave more room for wild finds than internet. I normaly leave internet buys for stuff on the top of my list that I was not able to find in the wild.
You also don't have to have everything all at once. Games will occasionally pop up in the wild for good prices.
Whenever I buy a new system, I always look for some cheep games, just to have something to play on it.
Here is how I got some of my stuff, maybe you will get some inspiration.I started collecting in 2009, and the biggest places I got games were from friends/ adequateness, Goodwill, Creg's List, eBay/Amazon, and local game stores.
Early on, I knew I wanted a NES, SNES, N64 and Genesis.
I did not have a personal credit card or a store near by that sold old games, so I had to scrounge.
Tag sales were my first method, but I never got anything too good, My first find was a PS1. I never found anything older but I got some N64 stuff later on.
I got a N64 system from my sisters freind, no chords, and some crap games. Got the chords off-line.
I later found a old video rental store and got some random SNES, NES and Genesis games CIB for cheep.
My SNES was from a friend.
I eventually got a NES and Genesis from the internet.
Stuff like the Saturn, 3DO, Atari 2600, Xbox, and Dreamcast were impulse, I found a good deal and got them.
The Xbox, 3DO, Xbox and Dreamcast were from Goodwill. Atari from Creg's List, and I got a rare game for the Saturn from GW, and later bought the system to play it on.
For games, I put a price limit on used retro games of $30 for average games, with a few exceptions for games I really want. Most of my pricy games I got for cheep, Only paying market value for Mario 64, Zelda LTTP and Yoshi Island.
I got games like SSB 64, Mario Kart 64, DKC2, Super Mario Kart, Mario World, Mega Man X, Banjo Kazzoie, Both Zelda 64s, Dragonforce, Mario Sunshine, Luigi Mansion, All 3 Zelda NGC games, and Yoshi Story were gotten cheep or free from Tag Sales, Good Will, or Friends, not paying more than $5 for any of them.
Big lots can be good, bus it's hard to find some that are not overpriced. I got a huge NES lot with great titles from Cregs list, for around $2 a game, and got Zelda 1 & 2, Castlevania, Contra, and Mega Man 3 in it. I sold Duplicates here a while back and made back most of the money. Cregs List is probably better for this, but eBay can be good if you dig around. I recently won a Famicom lot of 170 games on ebay for around $200.
It's fun to build up a collection from nothing, slowly getting stuff from where you can. I have pictures from early on to more recent times if you want to see how my stuff grew. I need to post new pics.
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