I agree that it is really expensive, to turn to the organizer. Such people are professionals in their field, they have established relationships. But still, it's really expensive. You will be able to do it yourself only by using useful tips from the Internet. You can find lots of reviews, articles, tips there. For example, I read this review about bride box https://www.ibtimes.com/best-bride-box-subscriptions-according-reviews-2864049 , when I bought it for my own wedding.