Well I could spend £500 on trad gear easily enough if I was just starting!
I was thinking the same thing. Ladders (Decent ladders) aren't cheap, and cheap ladders often aren't safe,.. add in the scrims, squeegee's, applicator, spare rubber, spare mop sleeves, BOAB & bucket, GG3, pouch, scraper & spare blades (Get a waiver signed), trad poles, wagtail (Yes, it is an essential bit of kit!) etc etc and you're easy reaching £500.
Granted you'll need trad gear too eventually, but there's a few on here that are wfp only and seem to manage quite well.