I got my points 2nd hand off of a retitired wc, cleaned his flat 5 times for free and they were mine!!
Imo points are a must, handy for gates, shops and hard to reach trad windows, if youre not going to use larger ladders much then it depends on the work youre doing i have a trade set of 3.5 ladders that i used for years trad but now as im mostly wfp i use a set of Abru domestic 3.5 as they are so much lighter! and if i need a little step ive got a crate that i nicked from the spa! everyone should have one at least!