新加坡采购需求：和纸胶带、计划贴纸、牛皮便签、日记卡、翻领别针、金属书签

I'm interested in custom embroidery patches with an iron-on backing. I have four different designs in mind and would like to order around 50 patches for each design. Could you provide me with detailed pricing information? Also, I'm curious if there are any color limitations I should be aware of. Given that our event is less than a month away, it's crucial for us to have these patches delivered promptly. Additionally, please let me know the expected delivery timeline once the order is placed, as well as any other relevant details regarding the production process. Your quick response would be greatly appreciated!