I havent seen the zebra eel online or the borneo python online when I have looked. I have seen both available locally though here in Texas.
Where are you from? Try asking your local store if they can order them.
Luckily I have found myself two zebrinus eels and one borneo python.
Borneo python is shy unless hungry then comes out to top of tank begging. Will hand feed ans let me gently pet it. It's big probably 14 inches super thick and fat. Giant of a fish.
My zebrinus are both small and skinny. Both eat great and are not shy.
My m dayi I got as a small fry. Skinny and maybe 4 inches. Now he is easily 8 or 9 inches and very fat. Only had for a few months.