I am also an eBay fan for both maternity and baby things. I’ve got several dresses and some smart black corduroy trousers for work and I’ve spent no more than a fiver on anything, so it’s a pretty cheap wardrobe but I like the things I’ve got.
The baby stuff has been even more of a bargain though, I bought a bundle of 20 babygrows for £4.50 the other day, all gap/John Lewis etc. so good quality and barely worn. My trick is to search by ending soonest and bid on stuff which is ending in the next few hours then just leave it to stop myself getting into bidding wars. The pic is of my favourite eBay buy yet - I can’t wait to see him in it!
If you have good charity shops near you i’d also give them a look, i’ve picked up some lovely things all for 50p and some even still had tags on.