Bonus consists of mapping currencies, and some higher tier/uniq fragments maps etc
For example: 50 horizons (to reroll maps) 50 alch 15 vaal 30-35 sextants 40 chisels 1 fragment 1 uniq map, a few more t16 maps etc
as for maps, a few full deals of maps all through t1-t13/t14 with some t15 and t16