I collect games for my personal enjoyment and not for the money. However, one day my game collection will go to my daughter or maybe even her kids (she's only 6 years old right now). I hope she gets good money for my collection. The cover project is great for making cases for games that didn't come in cases or replacing damaged covers. However, for consoles that had cases for their games (Genesis, TG-16, NEO GEO AES, DS, 3DS, Saturn, Dreamcast, SEGA CD), I want the original covers.
I've seen people on TCP, take their authentic PS1, DC, Saturn, etc... give or throw away the original Jewel cases & inserts, in favor of DVD cases. Their collections were worth thousands of dollars but are now worth hundreds.