Tyre prices have increased hugely! Have AVON ZV7s that are 4 years old. (2019 manufacture date, fitted Jan 2020) All 4 of them have huge cracks in-between the threads going around the whole circumference of the tyres! In that time I did approximately 15,000 miles, and the tyres still have 3.5mm front and 6mm rear thread depth. Very disappointing, never getting Avon's again that's for sure.
I bought them in Jan 2020 for £70 each, they now go for £125, a 78% price increase!! Even worse, Skoda can offer a different 'mid-range' tyre for £136 each (Falken AS210). That's £550 for midrange 'cheap' tyres!
That's more than my Goodyear F1 Assy 5s that I fitted in Nov 2020!*
*Should note the Skoda takes 215/45/16s, the Goodyear F1s were 225/35/19s.