If you have some mechanical/electrical ability, appliances aren't too hard to repair. There are manuals on the web, ebay has many new/used appliance parts.
I've fixed my washer/dryer a couple times.
I presume your dryer heats with electricity. There is a heating coil in most located at the dryer's rear. These are replaceable. Agree with Lepke, good source for parts is a search on Ebay using appliance's model number.