I totally think that artists and dealers should have mandatory contracts. Right now, often they're by word of mouth or through e-mail, and they're not written at all. The practice isn't there.
As a working artist, I do disagree with Miriam Shiell. I think any amount of money that an artist can receive is worth it, even if it's $250. In my own career I've seen the value of my work go up, through a very important piece I've made, by $5,000. That's through my hard work and diligence. I think I should receive 5% of that. That's not an unfair demand. Even 5% isn't a full 5% if you take into account that you have copyright collectives administrating those fees and managing that money, as we're proposing. So I think that's a very small and reasonable thing to ask for.