Yea, the earlier levels are a bit of a pain in the beginning. That's why I don't even concentrate on getting gold in the first 10 levels. It takes some of the fun out of the game since in real life finances are a struggle anyways. I just make do with whatever I can get from bandit caves, castles and Aylied ruins. Joining the mages guild and completing the mages quests is IMHO one of the biggest advantages. Alchemical equipment is probably one of the best weight per value ratios and there is a ton of it lying around the guilds and the Arcane University.
Also, once you have access to the Arcane University you can make your own spells and enchant your own armor and clothing using filled soul gems. I'll let you find out for yourself, but a few grand soul gems and a handful of old clothing if worked right can make you nearly indestructible and or undetectable....