Good article and upvoted; however, a word or two of warning. Every day the number of EOS increases so each issue may dilute the price a little - depending on how much ETH was paid. So what you buy today MAY be worth less in one days time.
In addition, I have noted that generally in the last 3 minutes of each token sale the number of ETH contributed can jump by about 30% to 50%. Coupled with associated fees, eg ETH payment, contract costs, etc you could actually find that you are better buying directly on an Exchange or through Shapeshift.
On present calculations I believe that if ETH contributed 3 minutes before close is about 5,000 ETH then you have a chance of getting a good price for EOS. This could change rapidly with ETH and EOS price movements.