eBay does not allow a price change after an item has been purchased, but does allow adjustments to the shipping cost. I will send a revised invoice with $300 deducted from the shipping charge. We can declare this as $1000 when shipped, but please bear in mind that it would then be insured for that same amount... in the event of loss or damage, you would be responsible for the difference.
Given the price reduction, we reserve the option to schedule shipment at our discretion within 4 business days of payment receipt. Sometimes we can realize an additional savings above our standard discount by shipping on a day where FedEx has excess plane capacity.