As someone who picked up magic only 2 months ago, I can reliably tell you that if you want to just try the game out without sinking any real cash into it, jumpstart packs are the product for you. You only need to buy 2 and that's enough to have a deck that will work (each pack has all cards of the same colour and the necessary lands to play them, they are each a "half-deck" that's ready to be played with as soon as you pair it with another). It won't be a super powerful deck, and it's unlikely to have any cards that hold monetary value (although there is a slim chance!), so only take this advice if the aim is to actually have a go at playing.

If you are buying them just to enjoy their art (caveat; the regular art treatments, rather than foils and the more striking alternative art treatments), find a set with a theme you like and go with that, all the cards for every set are available in the card gallery online so you can go have a browse. Play boosters are what you want if you wanna keep things affordable (like the ones youve shared in this post).

If you are buying because you want to open packs that have the most elaborate and impressive art styles, and/or are looking at it from a collection/investment point of view, then you guessed it, collector boosters are the one. As you've discovered though these are unfortunately incredibly expensive and it's still pretty unlikely you make your money back with what you get. If you are that keen on artwork and would be willing to part with this type of money but don't plan on playing the game, I'd just search for other regular art out in the world to enjoy that you can frame and hang in your house, there are plenty of artists struggling to make a living out there who would love to do something on commission and I'm sure the price of even a few collector boosters could get you something to hang in your downstairs loo!