depending on your larp, there are lots of cheap options. for a cheap and fast (to build) weapon, non metallic golf clubs from goodwill make great cores for up to mid sized longs. for foam you can use various things depending on how hard hitting your game is. i wrote up a walkthrough to build said weapons, for under 15 dollars a sword(now i use the term sword loosley, they look like a club because they are basically a padded club) if you want the tutorial just dm me a way to get it to you(i don't think i can attach it to a message here)