CAT 5e length limit?

[Zxian]

I'd be amazed if the commercial price would be so low

If you also need to split up the network - which you probably don't have to - you could of course simply but switches in between... But I think you already knew that...

<{POST_SNAPBACK}>

Well, just imagine the cost of a 2 port switch/hub and you've bascially got what you need. I've seen some no-name 4 port hubs sell for $25 CAD (~17 Euros).