Hi Hugo,
You might also think about getting a network card if the printer doesn’t have one already (my 9880 came with a network card), they can be had for around $40 for the Epson 9600, and then you can place the printer just about anywhere within reason. The printer I have with the longest cable run, 100’, has never given me a second’s problem, with Cat 5 or Cat 6 network cable you could go as far as 100m or about 325’. As well you have the ability to access the printer from any other computer on the network, if you have one of course. With 6 or 7 computer and 5 printers my little network is a god send for me.
Routers now days are cheap and easy to use/setup, you can get a gigabit 4 port wireless AC flavored router, transfer rates up to gigabit for wired connections and up to about 875 Mb over AC flavored WIFI computer to router and 100 Mb router to printer if the card you get is the old T10/100 card or 1 Gb for newer cards, for about $75. You could also then use mobile devices and wifi laptops to print from as well. Also a router could make a NAS devise available to all your computers and or smart devices and is a good place to centrally store and or backup image files and other data. A nice Western Digital RAID 1 (mirrored drives if one fails you just replace it and keep right on going) 6TB NAS box would set you back around $300.
So for about $100 to $150, depending on if your printer has a network card installed already, you could connect your printer to a computer up to about 325’ away if you had to, with a bunch of available side benefits should you find the need of or desire to avail yourself of them. So yes it’s a lot cheaper to just go out and buy a 15’ USB cable and or a powered hub and another 15’ of cable, but, I will tell you in my experience that doesn’t ever seem to work out as well as it seems it might. So you buy a couple 15’ USB cables and a powered hub and you have about $50 in that. By the way you really do not want to go cheap here the $3 cables and $6 or $8 hubs likely will work but at reduced speed and cheap hubs always seem to be problematic, been there done that got a couple of boxes full of nearly useless stuff to prove it, can't speak to active cables never tried them. So you got $50 into something that does one thing and may or may not do it to fast or reliably, or $150 for something that is damn near bullet proof and can provide a bunch of other functionality as needed.
So yeah I know you just wanted to move the damn printer 6 feet, not build a small network, but none the less there are some things to think about anyway.
Later Larry