Pretty well the only way to do this cheap is wait for a great deal. Every now and then you can swipe some diapers for almost nothing. About a month or two ago walgreens had 2 overlapping coupons for their walgreens diapers, i ended up getting 4 packs for like 70 cents. I ended up with 8 packs all together.
My grandson is gonna be here at the end of october so i started getting diapers as soon as i found out that my daughter is expecting. Wipes too.
Here is what i usually do..
If you shop CVS and get familiar with their CVS bucks program...lots of times with coupons you can increase your Bucks. Example: Lets say i have $10 in CVS bucks right now. This week they have covergirl wetslick lipgloss for 5.99 get 5.99 back. If i use a coupon with this i spend 4.99 and get 5.99 in cvs bucks back. My bucks will increase by $1. So i built up my Bucks, i look for items that will give me an increase. Some people have a lot of bucks they rotate every week/month. I usually try to keep about $20 in CVS Bucks on hand. Now after i find some items to increase my amount, in a month i might be up to $35 in CVS Bucks, i then turn around and spend $15 on diapers and wipes to go back to my normal $20. Hope this isn't confusing. So basically i didn't spend any of my own money on diapers just Bucks i earned.
Right now my daughter has about 30 packs of diapers and about 30 tubs of wipes plus about 5 packs of refill wipes. Diapers and wipes take some time to stockpile but when you get them for free or very cheap that's when you have to pile up. or do it slowly like i do at cvs.
German and taking over CVS and Walgreens one coupon at a time!