This pup absolutely must have surgery!! I have seen the results of people short-cutting and trying to avoid costly surgeries. Your puppy could end up with multiple problems if you splint this leg....and it will NOT heal. That much I can tell you. He could end up losing his leg.
You need to find a way to pay for this. I would suggest applying for Care Credit or another loan. I doubt you will find a vet who will offer a payment plan.
Also...please do not allow this pup to be up on any more furniture. I know it is hard and that people want to sleep with them and all, but it is dangerous for the pup! They do not understand and will jump off and hurt themselves. If your puppy falls again, he is at risk of having two bad legs that need surgery, or something even more severe like a herniated disc. There was a puppy like that on YT that broke one leg...was put up on a bed and he jumped and broke another leg.....ended up dying ... it was a very sad story.
Here is a recent thread about a puppy who broke its leg ... weighed 2 pounds and had the surgery and it went very well:
http://www.yorkietalk.com/forums/sic...ained-leg.html
Oh...this thread started out about another pup....but the user id is kate07 of the person whose pup had surgery for a fractured leg.