Congrats on your baby
I just had a boy almost 11 weeks ago and I also had to stop breastfeeding due to lack of milk supply!
I got my WW books and all on eBay. I got the Dining Out Companion, the regular points book, a diary/food log, and a case to carry it all in for $35 - and that including shipping. (The meetings here are $40 for the first one, so I was being cheap and saved $5 by ordering online, lol.)