I'm very new to RB but have been a long time RPGer and enjoy adding/mixing in small variants to my games as long as the playability increase outweighs the complexity added. I think this variant is pretty nice and thought I would share my "black market" variant for anyone who might be interested. This is good for people who are low on gold and are desperate for items/allies.
When entering a town BEFORE drawing a card you may choose to make a black market purchase. You declare how much gold you are going to spend and put it out front. Draw the card and you MUST purchase whatever the card is but at half it's value; rounded up (same as sell price but rounded up rather then down.) If the amount you declared is not enough to purchase that item/allie then it is discarded to the bottom of the pile. Sent's this is a black market item and considered "hot" (aka stolen) this item/allie can never be sold but can be discarded any time starting on your next turn. If this item/allie causes you to exceed your max size limitations then you must sell/discard one you currently own to make room for the black market item.
I know this variant option may not be used often but it's good for someone who gets a slow start with no items/allies with very little cash and desperate for an item/allie. I like this variant because it really isn't complex and it's balanced to where you may be forced to buy a crap item and equip it but you may get a great item at a great deal.