On the surface agree with firehawk but we really need all the details, if a "lease sheet" was done, this will determine if items were increased and/or bonus fees are charged...
It's reported there are up to $3000 off in bonus tags this month (have to find a dealer who is willing to use them) and many are reporting several thousand below MSRP...
I would recommend your next step is to get a quote from a Costco dealer...Even if you don't have a membership, all you need is a membership number so reach out to your friends and family to ask for their # or just have them going to costcoauto and use your email...
Additionally, look into the targeted incentives, there is one this month although IDK if it's all states or CARBs only, but it's a $3000 off (the total cost of the lease!) if you have a non-luxury Asian lease (list is someone but it's for like Toyota/Honda/Kia/etc) conquest...The loophole that dealers exploit is the conquest requires that that lease be in your household; to my understanding you just need someone's lease statement who resides in the same state...The dealer will say you live at the address to qualify for the incentives but will send your real address to the DMV...
In summary, going through Costco should get you under invoice ($3K off), if you can find a lease statement and a dealer willing to apply it that's another $3K off and finally the $3K off in bonus tags...
After you get your Costco numbers, google your ten closest dealers, google the dealerships name and "Internet Manager", try to get their emails and email them directly, just say you WILL lease a Volt this weekend and are looking for a price lower than Costco, ask if they have bonus tags left...You will have to go in person for the Costco deal but after that all of the above takes literally a half hour of your time and you can do it all from your computer...
For example, in DTLA (carb state) there is a dealer who will both apply the conquest and the bonus tags (assuming they're not all used), if you qualify for another $500 off such as Farmers/grad/military, they're charging $0 drive off and $234/mo for a ACC/C1/C2 Premier...