The level to attain is the lowest mob level in all sections apart from 'Foraged Items' where I have given zone level restrictions. If it is a foraged item where there are no level restrictions, I have put level one. This doesn't mean however that you will necessarily be safe in the zone at level one, so if you are unsure check Illia's Beastiary for zone and mob levels. Alternatively stay very close to the zone line. Do your own research first and check the bazaar for your server prices (especially for The Combine and Sleeper, where the prices are lower).