online 3d printing

Hi there!
I'm fairly new to the 3D printing world, it has been on my radar for many years now but I just recently started doing it on my own. I started with simple things but now I'd like to try someone else to produce it for me :D
I found these "manufacturing platforms" and I'm very curious about trying one of them but also don't know if it's worth it, some of them look pretty cool and since I'm also interested in CNC thought it might be worth trying, some I found are here for reference https://wikifactory.com/platform/digital-manufacturing/
Has anyone used any of them? Are they reliable? Thank you!

I think most of them are pretty good as they tend to use sls and polymer jet machines, rather than fdm,

But they are very expensive.
When your printer clocks in at over £200,000 - you don't give the prints away :-)

Hey, thanks for answering! I missed the notification haha but thanks, I contacted a couple of them and so far it seems good, prices weren't too bad actually so now I just need to decide which one to pick :)We'll see how it goes!