My bike is inexpensive, will that make a difference?

More expensive bikes benefit from being lighter, which means they are easier to ride uphill, but ultimately it doesn't matter how expensive a bike is, as long as it's well maintained. A well maintained bike will run smoother, have fewer mechanical problems, and will be more fun to ride. Make sure that you always carry a spare inner tube or puncture repair kit, tire levers and a pump and that you are able to repair a punctured tire if you have to.