Kitten needs life changing surgery

so we found this kitten under our house this morning. He is 8 weeks old and is a sweetheart however something got him and bit his leg causing it to break and fester. He’s in really bad shape but the vet I work with is willing to help me and try save him but we have to remove his leg. This is going to cost around 700 dollars.
we just bought a house and we just paid off our other fosters eye removal surgery. I am not in the best shape financially but I just can’t give up on this cat without a fight. I have started a go fund me and literally you have no idea how grateful I would be if you could either help out by sharing this post or donating (if you can’t donate please please don’t feel guilty. This is not your problem, but mine).
If I can’t remove his leg in the next couple days I will have to put him to sleep, but like I said.. I can’t give up on Rupert without a fight. ... thank you thank you thank you from the bottom of my heart.