Let's look at what makes the Compact unique.
1. Combo bottle/can opener tool. This is a short relatively thin tool that's just like any other tool on a SAK in terms of production. If anything, the combo tool is probably saving Victorinox a ton of money on production costs because it's easier to make one combo tool that eliminates four other tools (the small blade, the can opener, the bottle opener, and the awl are all excluded whenever the combo tool is included) than it is to make all 4 of those other tools, plus the extra backspring and the extra liner that go along with them. 3 of those tools also have to be sharpened as well, while the combo tool does not.
2. Parcel hook with nail file. This is nothing special either. Victorinox has been putting that same exact nail file texture on several different tools for decades. It's been said countless times, but I'll repeat it here anyway: there is no reason at all that Victorinox should not be putting that texture on every single parcel hook going forward. It's trivial. They've done it thousands of times a day on average to every Cadet, Classic SD, Minichamp, Money Clip / Ambassador, Sportsman, and whatever other obscure or discontinued models that I'm leaving out. It's nothing new or mind blowing or costly to do.
3. It comes with a straight pin. Wow, those are super expensive, right? No, they're not. They cost pennies to make and Victorinox charges around a dollar each for them if you want to buy them separately. YAWN. So lame. I can buy a whole box of straight pins that are more corrosion resistant for only a few dollars. That box will last me a lifetime. I'll be dead long before I can manage to run out of straight pins. Every 91mm SAK has the same exact straight pin slot too.
4. It has an extra slot in the back scale for a pen. Okay this is actually ridiculous. First of all, the extra space for the back slot means that the scale probably uses slightly less material. In terms of production, this scale is no different either. It's literally made from a mold just like every other celidor scale. When it comes to the pen itself, it's not even stainless steel. The main body isn't even ferrous! And what is it exactly? It's a small, cheap, pressurized pen insert. It's not fundamentally different than any other pen refill, except that it has an end cap that's shaped to match the outer contour of the back scale. That's it.
5. The mini screwdriver is included. Honestly, that's pretty great. I love the mini screwdriver. I wish Victorinox would make a version of the mini screwdriver with a ring on the back end so I could attach it directly to my key chain. But is the inclusion of the mini screwdriver worth the extra cost of the Compact? No. Not even close.
Any way I look at it, the extra cost of the Compact over many other 91mm models simply can't be justified. For those of you in Europe, the price difference probably isn't too bad. Here in the States, the difference can be pretty outrageous.
