I paid £25 for a 12 month standard iptv sub (for my kids bedroom tv) with vod movies and series, from an established seller who I buy my main sub from, he's been in it a long time so I know and trust him.
I've always found good value subs to run alongside my main one tbh, had one at £18 a year that was 2 connections for a couple of years, so it's not necessarily the price that should be a red flag.
I don't buy long subs when starting out, a month sub and get in their support group, you can tell after a month if they're competent resellers and if the service meets your requirements but I'm a very low maintenance customer for any seller tbh, very rarely go to them with issues that I need help with.