If you are into Ebay, quite often sellers will sell a "bulk lot" of 000 baby clothes which is ideal, as garanteed it'll be about the quantity that you need......and cheap too......(ie someone is selling what their baby has grown out of, so pretty much a "set" of what you'll need for the first 12 weeks..........)

(When I found out Charlie was a boy when I was pg with him, I knew I could "offload" all my 000 pink stuff, so sold the lot as a "bundle" on Ebay and described it as exactly that "Baby Girl 000 Pink Bundle - All a new Mum needs for for the first 3 months for her new baby girl!")

HTH........