How many times have you heard and read a beginner say " I'm going to get a second hand kite because I'm going to trash it anyway"

This attitude is just plain wrong .If you're smashing the kite heaps and trashing it you

1 Are not learning to fly the kite properly and have not spent enough time on a trainer kite flying it accurately developing smooth power and crisp turns which you then develop on a kitesurf kite
2 are Not spending enough time with the kite in light winds and learning finesse with the kite (lightwind flying requires alot of skill and actually is a good simulator for when you get on the water and add the board where you are actually losing a bit of power anyway as you drift along with the kite or in a current)
3 are adding too many other things like a board before your kite skills are excellent
4 might want to get more lessons or get an instructor who focuses on helping you develop excellent kite skills where there is little crash and burn

If you follow the right progression and do your apprenticeship developing excellent kite skills ,you should not be trashing the kite because if you are you are not only destroying an already fatigued kite and rendering it worthless and clocking up repair bills , but you are likely to be a hazard to yourself and others .
By all means buy a used kite but not for that reason and remember to regularly check lines and releases (used kites usually have old worn lines that should be replaced anyway and also worn bridles where pulleys are that should also be replaced)