You best bet is to go to your local supermarket and have a look. Most cheap "brands" will not be online and the ones that are, will most likely be more expensive. The good thing is, when you are at the supermarket, you can take the lid off the pot and have a look at the consistency of th gel. If it looks thick, and doesn't move when you move the pot about, then it generally means that it will have a firmer hold. If the consistency is more "watery", then it will have less hold and make the hair look more natural (so, not good for spiking your hair up).
Good luck!
Good luck!