[jacquesm]

This is already possible, but I'm not using it because in some trial sales I've found that sets are rather hard to sell profitably:

- the sets have to be absolutely perfect to be worth something

- you need to check to make sure all parts are present, this is hard enough for Lego which starts from known quantities and brand new parts, with second hand parts and people being ultra picky about such details as year-of-manufacture of the bricks it becomes an intractable problem.

- Rare parts are really rare. In fact, the only parts you would have to document like this are the rare ones, and 'rare' is actually one of the categories that I can sort for. This gives the option to sell only the rare parts for a certain set and to leave the bulk parts to some other method. Much easier to do that profitable.

[mcorrand]

Gotcha. The gap between hobby-grade solutions and business-grade solutions blows my mind every time.

[RhysU]

Can you choose which sets to assemble based solely on the rare pieces you have in hand (i.e. obtained), prioritized by some notion of complexity-weighted value of the set?

Said another way, assemble sets around the rare needles you have stumbled across unintentionally while sorting the haystack.