Hi Nano,
I'm the kind of guy that likes having all my gear in one (large) bag. I don't have a garage nor any dedicated room for my stuff so I try to keep thing neat and tidy. I do agree the Wiha set on a bit on the expensive side. I was considering having separate micro screwdrivers but at the end of the day, this solution was taking more space and I like the convenient tool roll.
FYI, I've bought the Wiha set for 65€ on Amazon which is give or take $90 USD...
I do the same for a field kit. Packs lighter too, and only keep a couple of dedicated drivers for the most common screws (Philips #1 & #2 here, presume Pozi-Drive variants instead in the EU).
They do seem pricey on the surface, but it's not all that bad if I step back and think about it.
I say this, because
most of the time you get tips on both ends, so it works out to about the same as a single decent mid-range or lower cost top-end driver (figure SK, Felo, Wiha, Wera pricing here). Handles are expensive if bought separately, but that's easily solved by starting with a kit, and building up from there.
Nutdrivers OTOH are expensive IMHO, and you can do better if a dedicated set will be sufficient (necessity if you need hollow shafts, which I prefer). I opted to use deep sockets for this.
Swapping tools a lot isn't exactly ideal, but it doesn't burn that much time (carrying a couple of extra handles can really help reduce this). All comes down to priorities I guess. See it as a must for field work.
Sounds like you got a reasonable price for the EU market (paid 80USD delivered a few years ago IIRC).