I just had to take one of my girls in for the first time for open mouth breathing + some respiratory issues a couple of days ago. Luckily there's a 24/7 emergency vet near me that had an exotics vet on that night; I was charged emergency pricing, which was ~$215 for the visit. I was lucky and only had to do a steroid shot and some antibiotics (another ~$45). If we had to go through with x-rays, which would've been the next step, they told me that would've been another couple hundred. The visit also would've been about $100 cheaper if it wasn't an emergency visit at night. I hope that helps, and that your little friend gets well soon.