With the upcoming Upgrade system crafting in the game will become more important. Not everyone has a character that can craft on a high level (15+) and not in all schools. So if you need something that you can not make yourself, feel free to ask here for it so someone who can craft the item will help you out. This has the advantage that you don't all have to be in game at the same time, you can transfer mats and finished items per mail if necessary. Of course, don't rip each other off. Supplier can tell you what materials he needs or ask for expenses, but try to keep a no profit policy here. Most popular items might be the upgrade modules, but feel free to ask for any craftable item. If you managed to craft something really cool yourself, feel also free to post the requirements and the result so others know what's out there. Have fun.