Ours are logo only also, but it's just wasteful to buy full new bags, coats shoes every year if not needed?
I have brought mine new one new logo cardigans and polo's each which has cost me around 40 but everything else they will keep from last year
luckily mine can wear brown and blue shoes so they have clarks smart shoes that they wear at home anyway and can also wear to school they don't need replacing yet as I brought them in spring and they still fit well and polished regularly they still look nice and smart.
My girls wear docs as winter school shoes and biggest passes down to littlest, so only big needs new docs this winter and that won't be till December ish, office offcuts or similar they will cost about £30.
Coats from last year were from mountain warehouse sale and last so well so they will wear them this year again while they still fit.
School bags have had a good wash and the girls are happy to use again.
Lunches wise, they have yumboxes and klean kanteens, pricey but they will last all through primary so I don't have to replace every year both girls have had theirs since nursery and still perfect condition
P.e kits is own clothes at our school so don't even need to consider that.
Only other thing I need to replace is school socks, £3 a pack from asda or somewhere. It's easy to keep uniforms cheaper if you only buy a few bits, wash often and reuse last years stuff, it's good to teach kids they don't always need new everything, as long as they are clean and presentable, old or second hand stuff doesn't matter. Better for our finances and the planet