Help us save Foxy!

About 2 weeks ago my dog started to develop a really weird sore/small wound on his scrotal area. We weren't quite sure what it was, so we bought a wound and skin care spray. It was working really well and disinfecting the area. After 1 week of putting the spray on him daily we noticed that it no longer was making any improvements. 

The odd thing about all of this was that my dog was showing no signs of any pain or discomfort. He was his usual happy self. 

Yesterday, he started to whine/cry so we took it as a huge sign that we needed to take him to the vet as soon as possible since the spray was no longer making any improvements. 

It turned out that it's a tumor he has in his testicle and an exise neck mass. The vet wasn't 100% sure if the tumor could be cancerous or not. To find out, my dog needs to get quite a lot of things done to him, and it totals up to an estimated amount of $1000. He needs to get neutered, a histopathology, surgery for his neck mass, and a scrotal ablation. 

Currently our money situation isn't going to make it possible for us to be able to pay for the things he needs to get done in order to get better. I'm going to start college soon and I have to pay out of pocket, so it'd be nearly impossible to get enough money in order for my dog to get the care he needs. 

If we can't manage to get enough money we're going to have to put him down because he'll only get worse and I really don't want to see him in pain/suffering. 

Please, please help my little 10 year old doggy get better!!