New user of pine nuts?

hi guys i am a new user of pinenuts (wanted to try a small bag of them at wallyworld since they were 6.00. wanted to try them first before bought a BIG bag of them at sams club for 15.00) anyone know why they are so rediculously HIGH?? also besides the common pesto, what else can i use them for/in and if i wanted to use nuts for a baking/cooking recipe what can i use them as for a replacement? they are great in reg salads. also how long do u toast them on the stovetop for? thanks!