Since you were thinking of getting rid of the gun. Why not just make it a project and take your time to do this on your own. I know you can do this. Look at some video of other guns and the hammer area of where that pin goes into and and connects to. Make it a project like a Puzzle. Imagine the self satisfaction if you were to do this. Keep posting on line and let others help alone the way.
ACCEPT THE CHALLENGE!
I'm a little puzzled. Previous pics show disassembled LCP. #50 is labeled a Kel Tec picture but the parts look like LCP to me. In any case, going by the #50 picture, I think you're talking about the pin #270, the pivoting piece #272 and the spring #273. I got myself into that tangle some time ago and solved it by clamping the pistol frame in a small portable padded vise, (mounted on a piece of 2x6) wearing a headlamp to keep both hands free and a fine, narrow jaw hemostat and fine blade X-acto knife to work on it.
Hard part, since it flew apart when I pulled the pin was getting that darned pivoting piece oriented right and the little spring the right way around and on the correct side of it. It was a trial and error chance with experimenting in between assembly bouts.....but it does go. Cut back on the coffee, go in there relaxed and comfy and go to work. Patience and gentleness are the key words.
Put the pin in partway, then, with the hemostat, carefully place the pivoting piece on the pin - flat side forward, notch up - then the spring. IIRC, the spring was the fun part, but it only goes one way. Use the X-acto knife to tease pieces into position. Hold them in place by adjusting depth of pin #270. After doing it a few times and cussing a lot, it gets much easier. It's been a couple of years, but IIRC it assembles from the right side of pistol, i.e. start the pin in from right side. I "think" the notch went to left to locate the spring. I think.
The notch in top of pivoting piece connects with the pivot of the hammer and the spring goes to left side of pistol. Hammer spring goes on left side. Look it over carefully - it will go a couple of ways but will only function properly one way.
Appreciate this little guy. If you really want a nightmare, try working on the trigger mechanism of a Taurus PT111G2. Mine had issues that turned out to be related to the trigger safety and gave me absolute flying fits getting it corrected.....but I did it with an aftermarket trigger that eliminated that goofy safety. (the gun has a positive manual safety as well) It's extremely complex and makes the LCP seem simple in comparison.