If someone is looking to purchase one of our existing VM 1.1.x Delivery Date and Time modules that are already developed, those sell for only $85 USD.
However, I believe you had requested a quote for creating a new VirtueMart v2.0 Delivery extension, which as most developers know is a major rewrite from VM 1.1.x. Since we currently do not have any pre-developed VM 2.0 Delivery plugins, it would need to be a custom development project and has been quoted as such. If you are not able or willing to pay for the initial development, then I'm sure if you wait for several months, you will be able to get a VM 2 Delivery plugin that is funded by someone else and eventually released for commercial sale by the vendor.
I know you would really like someone to invest time in developing this on spec, and then sell it to you at a fraction of that development cost. You are hoping to pay a pre-built extension price for a custom development project, and you're frustrated that so far, no one has built what you need. I'm sorry that we aren't able to help you with that. We must stand by the price we quoted. There simply isn't enough market demand for this type of plugin to develop it on spec, hoping to make enough money back in later sales. Frankly that would be a pretty poor business decision when there are many other potential Joomla extensions with much higher client demand our team could build instead, and a heavy load of client-funded project work on our schedule. We'll certainly keep in touch and let you know if/when we have a VM 2.0 Delivery plugin available for general sale.