Yeah, that's the whole point. I don't have any trouble getting some melons, but I don't get a lot, usually. Even starting them inside, the season is just barely long enough.I like the idea of using the lid of the container as the bottom of the planting pot so that you can simply remove it when it's time to transplant instead of trying to flip the plant out of the pot, therefore reducing the chance of damaging the plant's roots.
I learned about transplant shock with melons one year when I bought starts. The roots had grown out through the drainage hole. It was one of those 6 unit plastic things. I had a very hard time getting the plants out; had to cut the plastic, bend it, etc. Planted the plants Memorial Day weekend. I don't think they grew at all until July. They just sat there. Then about the 4th, they woke up. We want to grow now! Well, it was too late, baby. I might have gotten one or two not-very-sweet melons that year.