Thanks for the tip--M's about 17lbs now, & I'd only seen the newborn starter box.

If the other prefolds check out that might be a good way around it all. Also perhaps see if there's some used for sale? I know it sounds icky at first (used diapers??) but since they're made to be rewashed it really is ok (from the right source, of course). And if the washing is not up your alley, you can always see what kinds the services are providing (prefold or AIOs) & get some snazzy covers of your own for their prefolds (you'd then just have a few covers to rinse/wash at home).