I was complaining about lack of money early on, but I seem to have resolved the problem.

Kill more dragons and giants, and do as many Words of Power quests as you can. There is usually alot of high quality loot right next to shout locations. At level 31, I have about 40k on hand and a chest full of items worth just as much, if not more. And I spend money all the time on Grand Soul gems and smithing raw materials. I am probably going to buy my second house when I have about 60k

It really helps if you have some bartering perks or enchantments. My character is bout 40 in speech, and gets 40% better prices with bonuses.