Life saving treatment for my little man Thor...

Hi all, Massive thanks for getting us this far with Thor it means the world to myself an Tommy that so many kind and generous people are giving what you all have to help with treatment for Thor, on October 9th we brought our baby boy home, he was due wormers ect on oct 16th so we booked him in for his puppy check with our own vets and it was on this visit our vet found Thors murmur but it was very audible and was a real concern so much so he advised we have him refer us to a cardiologist which he did and on 18th oct we had Thor checked by cardiologist and found he didn't just have a usual heart murmur he had something more serious a severe heart condition called Tricudpid valve displayzia so Thor was on a road to heart failure in future and that there was no treatment for his condition, in the following days we came home and setting about making memories with our only 3month old boxer pup as we didn't know how long he would have, Tommy took it upon himself to contact different places i.e supervet noel fitzpatrick, Royal veterinary collage ect RVC got back next day to our vets and said the do actually do surgery on this condition and we were given a date for a consultation Wednesday 16th January 2019 but on the Friday before this Thor was declining rapid and we were referred as an emergency to RVC who told us he head from Troon, Ayrshire Scotland to RVC Hertfordshire around a 10-12hour drive for us, so we left they them called us again and said Turn back we can't see Thor right now as we would just stabilise and send him home Monday your vet can contact Glasgow vet school and have Thor stabilised there and have all scans done and they can send to us and they would then use these scans to deem wither Thor was an eligible candidate for surgery, this was all done and today Wednesday 23rd January we had a call from our specialist at GVS with the news that London was calling us as they are confident they can fix Thor's heart condition but the cost is 15000£ and having already been couple thousand on vet bills and will continue to have fortnightly visits to GVS we have felt he had to a and the figure I had initially put on Thor's go fund me page.... As we now need to find this whole sum of money ourselves to try save Thor's life, Again with all our hearts thank you and we truly appreciate everything everyone has done for Thor and for us Xxx