Reasonably priced and offers a selection of foam to load out your bag. It's capable of fitting 6 layers of foam which I must admit fits in two whole High Elf armies or my Ultra Marines army and all it's vehicles. Lee who supplies them is friendly and great to deal with.
They also sell individual foam trays as well. All their trays are standard sized that fit into your normal GW case, which is really helpful for those of you like me with a huge selection of armies that need storage.