I got one of these at Otakon this year but min was the red skirted one. I also got Hinata and Natsu. Oh I learned a trick on the box it will actully tell you who your getting just look at the picture of all the characters in the set. Some times they'll have a number or a letter next to the characters picture. Then look on the box for the leter or number. It's that easy.
Oh Natsu is available so is Hinata, Akira, Kyoko & Tiffany. But the figures will be released late March. It really depends if you're gonna buy a set or a single piece. I usually look in ebay or search for shops at google.com Japanese/Hong Kong shops are the best but if you live in the US then buy from US shops coz the shipping will be high when you buy across the globe. One piece of capsule toy usually costs $3-10 while sets are sold $20 & above. A small PVC statue may cost $26+ while a huge statue can reach up to $500