Jamiesilo makes a great point about sealskinz. They do not keep my feet warm because they are not insulated. They also make my feet sweat, which then gets cold etc. They are also too thick IMO so they make my shoes feel tight.
Some people swear by them, mind you.
I have effectively given up on dry feet as I sweat a lot, have SPDs so my shoes are not 100% watertight! and don’t have enough cash for a pair of boots! The best thing for my requirements is ‘warm despite being wet’ rather than ‘must keep dry at all costs’.
Anyhow, it’s only going to cost you a few quid to try the aldi jobs.