Each AGS was worth 500 bts, as there were 4,000,000 AGS and 2,000,000,000 bts
Of the 4,000,000 AGS only half of them came from btc donated the other half came from PTS donated
This only answers half your question, I do not know how much in btc was raised before 2/28. That amount of btc divided by 2,000,000 x 500 would get you the average price per BTS paid by AGS investors I believe. I think it is about 1/2 of the current value of BTS.
Yes but because of the early snapshot(28 feb) it was 500 x +-3.3= +-1650 BTS per AGS
My average was about 0.01 BTC per AGS(which was far from optimal)
It's hard to say what the average btc price was, since the whole gox thing was going down in February.
The BTC price went down from 800-600 from the beginning of the year to 28 feb. So let's say average 700 usd.
That would make 7 USD per AGS. And 0.0042 USD per BTS
Edit:
The extra 9.4% of 2.5 billion would be 235 million sharedrop to AGS.
235 million/2 million AGS= 117.5 extra BTS per AGS.
Total 1767.5 BTS per AGS.
With the 7 usd average this would be 0.00396 USD per BTS.