Quality boots last 5-10 years with proper care. Cheap boots last one to two seasons. Cost-per-wear maths favours quality overwhelmingly.
What 'quality' means in boots
Real leather (check 'all leather' label — synthetic boots are non-repairable). Welted construction (Goodyear welt allows resoling). Replaceable heels. Comfortable from first wear (not 'they need breaking in'). UK options: Russell & Bromley, Vagabond, Dr Martens, Tricker's, Church's.
Spend £150-300 on boots that last. Compared to £40 boots replaced every 18 months, the maths is clear within 3 years.