Ya, Signature Solar loses a significant amount of money on shipping as more often than not the final total is more than what they quote the customer. They offer store pickup if you want to save the $700 that shipping companies charge. Personally, the cost of renting a truck or the gas of using one and my time would be worth more to me than shipping costs.
Local pick up can negate shipping cost savings. Solar in my state is free of sales tax, Signature said if I pick up they will charge sales tax. (Is that reimbursable?)