Do not ever ever ever buy muck boots they are the worst wellies I have ever owned the longest I've bin able to make a pair last is about 4 5 months. Fair enough I do have to wear them all day every day but you would hope you could get atleast a year out of them.
An when the price is £50 £60 it' works out at more than a tenner a month. Ive invested in a pair of hunter neoprene balmorals there £115 but I know the guy who sells them so I got for £95. I've had them for over a year now and there still as good as the day I bought them.
Ps muck boots make your feet stink worse than anything