Where can I buy it?
Kosmos has stopped working, Atmosphere is not loading properly. I hope the paid service is free from such bugs. I want to play, not spend a few days repairing the console every few months.
You shouldn't be repairing anything every few months. Do you mean because a new system update came out? If that's the case then you'll find SX is usually a little behind on the firmware fixes. Most of the time they just steal atmosphere's fix. There was instances where they didn't. I am happy to help get Atmosphere running properly. PM if you like.
If you are talking about when Ninty posts a new system version and you have to update.Atmosphere, get
sigpatches then with SXOS,you still update have to SXOS and the Nintendo update too. No sig patches and SXOS does have an option to update SXOS from within the software so you can do it without a PC. Atmosphere doesn't have this built in but If updating Atmosphere is the issue then try the AIO updater. You can update atmosphere, Hekate,
sigpatches as well as some of the packaged solutions (Deep Sea or what not) to the latest version without a PC.
https://gbatemp.net/threads/aio-swi...w-and-cheats-directly-from-the-switch.574043/
If easy updating is the only reason,
don't buy SXOS. I got it when it was the only solution. I really don't see why anyone would buy SXOS these days
unless you want a massive amount of games on an external drive(HDD,SSD) or maybe if you have a ton of kids so they can have their own flash/hdd/ssd that can be hot swapped. USB/XCI loading IS the only real advantage. Other than that you might have exaggerated expectations of SXOS. They are a bit more user friendly overall but they are usually a bit late to the party when it comes to updates and hot fixes.
Thanks you all guys for the answers, but the xecuter website is down. Each time I try to get in the site a message says "impossible to connect"
edit: guys, I am using firefox as web browser, it looks like using another one (like chrome), the website it shows
Did you find it? If you did, please link something to help the next person avoid the trolls on here.