Hi and welcome from a recent UK VR bride!!!
Unfortunately, DFTW does not distinguish between weddings and vow renewals and so the prices for the packages are exactly the same whether you are having a wedding or a VR.
Currently, the cheapest and smallest package offered by DFTW is the 'Memories' package which is for up to six people (including the happy couple), offers the very basics elements (it doesn't even include a cake) and cost $1991.00. I believe it is still uncertain whether this package will still be in place after Spring next year. The next package up is the 'Escape' and this varies in price according to the locations chosen, ceremony time and date booked and whether or not a private dining option is added.
My husband and I recently had our VR at the Swan (a hotel in WDW), Because the Swan is not a Disney-owned hotel (although it is on Disney property), the weddings/VR's there are not operated by DFTW but by a company called 'JustMarry'. Events at the SWan can work out at less than half what it would cost for a similar event through DFTW, and you are allowed a lot more flexiblity about things like floral, decoration and cake, than you get with the smaller DFTW packages.
The only things that Swan brides cannot do is have a MK bridal shoot, as this is reserved exclusively for DFTW's brides (although you can have a shoot with DPS at any other park in your bridal attire), and have use of Cinderella's carriage.
If these two things are not essential to you (as they weren't to us - too expensive!!!), then I highly recommend looking into having your event at the Swan. Our day was perfect for us!!!! We were given complete freedom over our choices of the details of our day, and it cost us less than half what it would have if going through DFTW. We were 100% happy with our choice of going through the Swan and highly recommend it!!!!
The planner handling the Swan wedding/VRs for 'JustMarry' at the moment is called Karen and she is an absolute angel!!! If you drop her an email (just google 'Just Marry'), she will forward you some information without obligation.
Feel free to have a peek at my report of our special day (the link is in my signature) and if I can be of further help, or answer any questions, don't hesitate to ask!!! There is also a sticky at the top of the board for FAQ for Swan and Dolphin (sister hotels) brides!!! Best of luck sweetie!!!