It could well be. I'm in the UK. Sorry to bother you. I like to know if a link I provide no longer functions. After a while one gets quite a few and it isn't practicable to check them all on a regular basis.I wonder if it's a regional thing- I just clicked on all of them - the only one that shows unavailable is the band-aid hurt free antiseptic - there's a 2 pack if it's looked up by product. https://www.amazon.com/Band-Aid-Brand-First-Hurt-Free-Antiseptic/dp/B0056AY3WU/ref=sr_1_3?crid=2D0YXFU2UK53M&keywords=bandaid+hurt+free+antiseptic&qid=1654291557&sprefix=bandaid+hurt+,aps,183&sr=8-3&th=1 Though I usually just get it at Walmart.
The kit shows available for one-day delivery, same with the sutures. Again, could be where you live vs. where I live on availability.
The good news is there are many versions of these kits and most come with about the same stuff, so if nothing else the links should serve as a good jumping off point. The important component in sutures is finding the "chromic" ones - in the link provided, it was the cheapest (and immediately available) in my area that included chromic in their pack.
It's probably just unavailable in the UK and EU in that case.