I am doing silks too. Tiger lillies are my favorite flower and I always knew I wanted them at my wedding, but I am sooo allergic to them so silks was the best option. I bought all my lillies last september from Ac Moore (a craft store like Michaels) and got them 75%-90% off from summer clearance! I paid less than $100 for all the flowers for my wedding. We just recently decided to add 4 tall centerpieces in a different flower since all the lilly ones will be short, but we got some great beige flower from Michaels 60% off plus a 25% off everything so that was still super cheap. I'm going to be making a sample of my centerpieces in the next week or two, I'll try to remember to upload some pictures once I'm done