I don't have decided to go for this project/ product without consideration, it's why it's modular, you take the module you want, not everyone need all the module and it's great.
So what advantage is there over just buying individual devices?
I don’t know if you are familiar with ELV, a German electronics vendor that for many years made some of the nicest kits in the industry. They had a complete line of test gear (including meters of all kinds, power supplies, soldering stations, and all kinds of analog and digital specialty devices) in a nice enclosure that let them all stack nicely. ELV has released its entire magazine archive for free now, and it shows the schematics for most of those kits. (Unfortunately, in the 90s they moved more and more of them to microcontroller-based designs, but since they don’t release source code, those later projects cannot be recreated easily.)
Why the big brand cost so much, margin, additional functionally, more shipping cost, marketing and more.
And what makes you think you can do it cheaper than they can?
My product is a kit so you pay obviously less
Oh you sweet summer child…
Kits cost way more than finished goods now. Kits were only cheaper back when electronics were used point-to-point wiring which had to be assembled by hand, meaning that assembly labor was a significant cost. But ever since PCBs assembled with automatic component insertion (which has been around since the 50s) became widespread in the 70s, it’s been cheaper to sell the finished product than the kit.
PCB-based products like later ones from Heathkit, and the ones from ELV, were cheaper not because of lower labor costs, but because they were simpler products than commercial products on the market.
Kits require a HUGE amount of labor to count, wrap, and label parts individually, and then collect those individually wrapped and labeled parts into a complete kit without forgetting any.
Another significant cost with kits is user support, because a nontrivial percentage of the kits will end up not working, whether due to user error (like an inadvertently swapped part, or because a user lacks the skills needed), or because a bad part made it to the customer (remember that the process of individually packaging means a higher chance of a part getting damaged with ESD or physical mishandling), or because you made a mistake and put the wrong part in the kit, and more. Those customers will reach out to you for help in fixing the problem, which may require huge amounts of time and effort, and may require you to send new parts.
also it's not destined to laboratory test, it's a prosumer product 😉
Ok, fair enough. Like the Heathkit and ELV products I mentioned above.
But the low-end market is where the Chinese are already quite strong. The only reason for kits is for people like me who enjoy assembling them even if they cost more than just buying the product would!
It’s sad, because I love building kits, but barely any serious electronics kits exist today.