@Abbccc we don't buy designer but probably spend £2000 a year. DS's feet grow quickly and we only buy bobux, startrite etc £30-£45 a pair easily, one or two pairs of sandals and trainers for summer, trainers, boots and wellies for winter that's easily £200 a year. Good winter coat £40+ , summer jacket £25 puddle suit another £20, if you're including grobags 2 for winter, 2 for summer £25-£35 each we tried M&S or supermarket ones (gifts) but they go lumpy and don't wash well, there's another £100. Most of DSs clothes are next, La Resource, H&M and I get a lot of sale things from Frugi, Boden, JoJo etc.
4 seasons a toddler who is in a different size every 3-4 months up to this point, spend a few hundred every season which if you break it down per item isn't a lot per item (just bought DS 8 pairs of shorts, 15 t shirts, few long sleeve tops, couple of cardigans/hoodies, dungarees, 2 swimming outfits, new swimming nappies, couple of packs of sleeveless vests 3 pairs of short pyjamas, grippy socks for around the house, water shoes for the beach (we live on the coast), 4 pairs of leggings and a pair of jeans plus summer footwear) £4-500 3 times a year.
I really don't like things with slogans and TV characters on them, or trucks etc because he's a boy so you do ended up paying a bit more to avoid that.
I just don't think the amount in itself is relevant, it's whether you have the disposable income to afford it, that devices if it's reasonable or not. We have no debt other than a mortgage and save well, including decent pensions.