So why should I pay 1900$ for that laptop when I could buy another T430 ...
Because it's an emotional thing: it may remind some people of their first laptop. It's like people buying a VW Bug (beetle, Kaefer), Mini-Cooper, or Fiat 500, for emotional reasons. People pay good money to feel young again.
Coincidentally, some of those retro models are also useful: my wife drives a mini, several friends and neighbors have beetles, and a friend drives the all-electric 500. All pretty good small cars, but all a little expensive for what they offer.
I personally don't do retro, and I drive a boring Honda. And while I haven't saved the first computer I ever used (the first one I ever had at home: Commodore 2001, the first one I ever logged in to: Philips P7000, and IBM 370/158, and the Philips and the IBM are way too large for my home); but I do have two small VAXes saved in my basement.
Here is a slightly indecent story about my first laptop: I had tried the Mac portable in 1992, but that was a useless disaster, and I returned it after a few days. In 1995, my employer gave me a Toshiba laptop (about 2" thick), which was the first laptop I actually got work done on. A few months later, the screen on it failed. Because I was using it heavily for travel, I needed to get it fixed ASAP, so I found a local Toshiba-authorized warranty repair shop, which was "only" an hour and a half away from my home and office. So I drove up there some afternoon in the fall, and arrived around 4:30pm. There was a very charming young lady at the front desk, who took in the laptop, told me to wait a few minutes while the technician diagnoses it, so I went and sat in the waiting room. After a little while the repair technician comes out: I'm lucky, they happen to have a spare screen for it in stock, but it will be about an hour or so for the whole repair. I tell him that I'll be happy to wait, since it saves me many hours of driving. No problem, I sit in the corner of the waiting room with a paper cup of coffee and a newspaper.
Come 5pm, they locked the front door, and I was the last person in the waiting room. Another young lady showed up, and started chatting with the front desk person. Since it is a few days before Halloween, they got out their Halloween costumes and discussing them. Having completely forgotten that an older male (me) was sitting in the waiting room, the two girls took off their clothes and tried on their costumes. And when I say "take off", I mean it; they were down to a single small piece of clothing, leaving not much to the imagination. Now one might think that this would be tittilating; it isn't. It's just scary: if they suddenly remembered me, they would scream, a scandal would ensue, and I would be hauled off by the police for sexual harassment. So I just quietly hid behind the newspaper in the corner, and tried to not peek (glancing at reflections in windows).
So I associate pretty naked women with early laptops. Good memories ... I might also say good mammaries, but that would be a bad pun.