RS doesn't deign to even talk to people who don't have VAT IDs here :-(
It's a shame; as far as I can tell, the only reasonably-priced source for bulk machine screws that I've been able to find was Aliexpress/Alibaba (depending on quantities), and even that has gone to shit with the new import tax rules. (I'm not opposed to paying import taxes. I am opposed to paying a €20 processing fee in addition to €0.30 tax for €1.50 worth of stuff)
In France, they have a different website for the general public ( https://www.rs-particuliers.com ). Its search function is terrible: you basically have to look up the RS ID of whatever your are looking for on the pro site first. But you even have free shipping when ordering during the week-end.
Don't they have similar sites for other EU countries?
Thanks to your comment I just found https://www.rsonline-privat.de but the site doesn't seem to have free shipping during the weekend (at least now 1h before the end of Sunday).