Also good to note; bjd's are made of resin while pullips are made of plastic. The pricing is also a big difference; pullips run from $80 to around $120, while bjds can run from $150 to $1000!!!
actually, this isn't that true.
The difference between ball jointed dolls and fashion dolls, like pullips, are that ball jointed dolls are strung completely with elastic or something similar. dolls like pullips and the like snap together with pieces.
BJDs can be made out of anything from plastic to resin to porcelain. To be on topic for doa they must be resin though.
Prices also range from about 30$ (the ABS [plastic] hujoo sueve and similar dolls) to several thousand dollars, like the much coveted volks cruise edition williams, who my friend currently has on layaway as the price is 3,500$