We didn't spend much on DD. Nappies from Lidl, multipacks of wipes from Amazon, multipacks of bodysuits and sleepsuits, a sling, a cotbed (no moses basket) and a lie-flat stroller (no pram or carrycot). She's used the stroller since birth and we expect to use it until she stops needing one. It lies flat, folds quickly and is really light so I can carry DD in it up stairs etc so I can get out and about on the tube on my own (our local station isn't step-free). No changing table, wardrobe, car seat (London based so we don't have a car), swing, nursing clothes (just lift your top), floor seat, Sleepyhead, pregnancy/feeding pillow, nursing chair. She slept on the playmat when in the living room, although we'd often just go to bed at the same time she went to bed. We got a cotbed for her which she went into the day we came back from the hospital, and will last until she's about 5. We spent nothing on decorating/furnishing a nursery as we're in a small flat and she's sleeping in our room until we move house! Breastfeeding was cheap, I never needed breastpads (though I bought a pack to start with) or nipple cream, as I didn't have many issues with breastfeeding and I took to it pretty naturally. I bought a couple of nursing bras in the M&S sale which lasted the whole time I was breastfeeding. We bought a breast pump and bottles so DH could share the feeding, but that was a waste of money because she refused the bottle! We also wasted money on cardigans, and some sleepsuits, as we had DD last summer when it was sweltering and she spent most of her time in a bodysuit or just a nappy on some days. DD has never been a very sicky baby so we never had to change her that often, though she did have more poo accidents in the early days (rare now she's on solids). But that meant we didn't need a large amount of clothes for her. She gets most of her clothes from her two sets of GPs and my DSis who has two older girls. We got a high chair when she was nearly six months and about to start weaning.
We did buy mostly new, though we were given some things from family. None of it was top range stuff (Ikea, Silver Cross, Argos) so still not too expensive. We have a comfortable income so we could afford it, but didn't see the point in splurging on expensive brands or items that would go unused.
I also wasn't working for a while, before we had DD, so we were used to not depending on my income and hadn't budgeted into our mortgage or other spending, so didn't really suffer for the lost income.