A few questions I hope someone can answer.

The reason Factom works with a token (Factoid) is to prevent it from SPAM. With Factoids you can buy (EC) Entry Credits.

1. What is the price of an EC (as I heard this always stays the same, regardless of the Factoid price)?
2. Are the costs of 1 entry equal to 1 EC?
3. If the Factoids are meant for preventing SPAM, why are they tradable at all? i.o.w: Why not just buying EC's directly for a fixed price and that's it.