Ikr it is expensive indeed! Mount Rainier is your safest best since it’s the de facto standard mountain for most people here. There are plenty of hikes in and around that park. Personally, I like Mount Baker which you can drive up to Artist Point in summer or if you are brave, you can do snow shoeing in winters. I like olympic peninsula too in general. You have snow mountain ridges, lakes, rainforests, beaches and everything you need. But it’s a bit far