Yeah, PA's quantities of Sense sold out fast. The game has had decent hype ever since the KS, and I think enough people respected the full disclosure that the game doesn't run optimally on the Vita that they still wanted it. I'm already paid up for a copy via KS so didn't mess with buying it from PA today.
Had both models of the Atari Lynx at one point, but sold the original model as the battery life of the original made Game Gear feel like a energy efficient system. The revised Lynx has improved battery life as well as a much nicer overall design. The downside though was that the original model was cleverly designed to be playable by both Left and Right handed people, a innovation I wish had continued seeing as I am left handed. Have never owned many Lynx games though as the system was a rarity even in it's time as a current-gen system, believe I own all of four games for it (all in storage presently).
Sold off all but two of my NGPCs in 2019 to pay bills. Kept my original CIB (US) released system and one JP revised model. It was a system I wanted to shoot for owning all the domestic games for, but that mess with the release of Faselei and near immediate removal of the system and all games from the market screwed that plan up. Next thing you knew all the NGPC games were commanding top dollar. To this day I only own 12 of the 32 US releases, with a mere three of those being CIB. Did pick up the DC link cable a about four years ago cheap, so that's something.
Dreamcast was the first console I made a serious effort at attempting to own all of the domestic releases for, and that served as my proving grounds of sorts for what not to do if you want to own all the games released for a system. Still missing 22 (US) games for the system because I went nuts collecting for it and ended up side-tracking with buying up imports. And when I say I got side-tracked buying imports, I mean to the tune of 133 imported titles. I could have easily bought those other 22 games a couple of times over during that time frame and am now kicking myself as those remaining titles are some of the rarest / highest demand games on the Dreamcast, and now command absurd money.
Like I said, learned my lesson on what not to do when trying to 100% a game library for a system with Dreamcast. Vita has thrown me off because of this insanity with Nicalis and the two games we all know they're sitting on that a few copies of leaked out of Sony into the open market. Are they commercial releases? No, not yet, and maybe not ever. But do they exist? Clearly.
And will likewise chime in my disdain for the way in which LRG has tragically forever changed the physical release game market. It was fun, at first, and then it just became a stressful headache. I can't see myself going out of the way to try collecting games for any of the now modern consoles aside from Vita, and only still with the Vita because I'm so heavily invested in it and determined to see this thru to the bitter end.