Regardless, 10 turns is nice compared to 40. But, Strider - be patient on ToE. We don't know what other techs other civs might have (remember, we need 4 techs. We can't build it right now). Also, most will have steam once we finish medicine, so that means steam's research could be 4-6 turns (if we're lucky). Then that's a poll on the cost for steam vs. 2000g or so.

Greece is being VERY generous to us.
Also, this is from the FA post:
Granted, the very nature of a MPP changes the current strategy of the game, not to mention outright dangerous.
Pros: "Let us draw off the wealth of distant nations"
- It would VASTLY increase science output (we could possibly go very near, or at 100% and still generate income - based on current scientific data). We can get Medicine in 10 turns at 100%, but at a deficit of 124gpt. The deal would change that to a surplus.
- It would solidify relations with Greece
- The extra income would let us keep a head up in science
- We can cut down on Greece's research time
- It will speed up our research of Medicine (and steam) - that means within 2 full (10 turn) turn chats if we're lucky.
- If Greece cancels the deal, it's a rep hit for them.
- Greece has an MPP with England, so England WILL fight Persia. Also, France is in the war against Persia.
- Greece is commercial, so they can recoup the wealth.
- Greece has generally been peaceful this game.
- Greece, France, England and us have a common enemy - Persia.
- If not used for science, we can upgrade our units, and rush buildings/units.
Cons: "Gimme more SOLDIERS noble leader...!" :soldier:
- MPPs means war with a potential trading partner/ally if they decide to attack Greece.
- MPPs can get ugly quick if we don't know how to use them.
- Our income would be reduced to a much smaller amount with 100% science (but could be negated by trade)
- Greece could get bold and start attacking other nations (bringing us into the war)
- It would disrupt our 0% strategy, and we'd need to tread carefully with an MPP strategy.
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One other thing I want to add:
We have trades and treaties ending (most of them) in 1 turn. Total, this will give us 60 gpt back, for over 140gpt surplus if we take this deal. (if not -that is, increasing science to 100%- , we'd have over 550gpt)