I'm new to multi-year contracts, and even annual contracts. I have a customer (a church) who is asking about if they sign a multi-year contract with us, if we will give discounts. I'm ALREADY giving them a great deal on their tree work as-is currently. I'd love to say yes, but I don't have any wiggle room on prices for their maintenance pruning currently as my prices are already VERY fair. What should I do?